Document:

EX-10.16

 Exhibit 10.16 

Exclusive Call Option Agreement 
 This
Exclusive Call Option Agreement (hereinafter referred to as the “Agreement”) was entered into between the following parties on 26 September 2019: 
  

	1.	 Certain shareholders of Nanjing Xingmu Biotechnology Co., Ltd. (hereinafter referred to as
“Parties A”) 

 Chao GUO 

ID number: *********** 

Residential address: *********** 

Zhongshu ZHAI 
 ID number:
*********** 
 Residential address: *********** 
  

	2.	 Nanjing Xinmu Information Technology Co., Ltd. (hereinafter referred to as “Party B”)

 Registered address: No. 10-396, Fenghuang Street, Jiangpu Street, Pukou
District, Nanjing 
 Legal representative: Chao GUO 
  

	3.	 Nanjing Xingmu Biotechnology Co., Ltd. (hereinafter referred to as the “Company”)

 Registered address: Room 201, Building 6 (Yuetalou), 18 Fenghua Road, Yuhua Economic Development Zone, Nanjing 

Legal representative: Chao GUO 
 (In the
Agreement, the aforesaid respective parties are individually referred to as a “Party” and collectively as the “Parties”.) 

Whereas: 
  

	(1)	 Parties A are registered shareholders of the Company who collectively hold 85.5% equity in the Company. As of
the date of this agreement, each of Chao GUO and Zhongshu ZHAI holds 42.75% equity in the Company. For details of the shareholding structure of the Company, please refer to Annex I. 

 

	(2)	 To the extent not in violation of the PRC Law, Parties A intend to transfer to Party B and/or any other entity
or individual designated by it all their equity in the Company, and Party B intends to accept such transfer. 

	(3)	 For the purpose of the foregoing equity transfer, Parties A agree to grant Party B the exclusive and
irrevocable Equity Transfer Option. Pursuant to such Equity Transfer Option, at Party B’s request, Parties A shall, to the extent permitted by the PRC Law, transfer the Option Equity (as defined below) to Party B and/or any other entity or
individual designated by Party B pursuant to the provisions of the Agreement. 

 Therefore, the Parties, upon negotiation, arrive
at the following agreement: 
 Article 1 Definitions 
  

	1.1	 Save as otherwise interpreted pursuant to the context, the following terms shall have the following meanings in
the Agreement: 

  

			
	“PRC Law”:	  	shall mean the then effective laws, administrative regulations, administrative rules, local regulations, judicial interpretations and other binding regulatory documents of the People’s Republic of China (excluding Hong Kong
Special Administrative Region, Macau Special Administrative Region and Taiwan for the purpose of the Agreement).
		
	“Equity Transfer Option”:	  	shall mean the option granted by Parties A to Party B to purchase the equity in the Company held by Parties A pursuant to the terms and conditions of the Agreement.
		
	“Option Equity”:	  	shall mean, in respect of Parties A, 85.5% equity in the Company Registered Capital (as defined below) held by them.
		
	“Company Registered Capital”:	  	shall mean the registered capital of the Company of RMB5,847,950 as of the date of execution of the Agreement, which also includes any expanded registered capital as a result of any capital increase in any form within the validity
period of the Agreement.
		
	“Target Equity”:	  	shall mean the equity in the Company which Party B has the right to request Parties A to transfer to it or its designated entity or individual in accordance with Article 3 hereof when Party B exercises its Equity Transfer Option,
the quantity of which may be all or part of the Option Equity and the specific amount of which shall be determined by Party B at its sole discretion in accordance with the then effective PRC Law and based on its commercial consideration.
		
	“Exercise of Option”:	  	shall mean the exercise of the Equity Transfer Option by Party B.

			
	“Transfer Price”:	  	shall mean all the consideration that Party B or its designated entity or individual is required to pay to Parties A in order to obtain the Target Equity upon each Exercise of Option.
		
	“Business Permits”:	  	shall mean any approvals, permits, filings and registrations, etc. which the Company is required to have for legally and validly operating all its businesses, including but not limited to Business License and other relevant permits
and licenses as required by the then effective PRC Law.
		
	“Material Agreement”:	  	shall mean any agreement to which the Company is a party and which has a material impact on the business or assets of the Company.
		
	“Exercise Notice”:	  	shall have the meaning ascribed thereto under Article 3.5 hereof.
		
	“Confidential Information”:	  	shall have the meaning ascribed thereto under Article 7.1 hereof.
		
	“Defaulting Party”:	  	shall have the meaning ascribed thereto under Article 10.1 hereof.
		
	“Default”:	  	shall have the meaning ascribed thereto under Article 10.1 hereof.
		
	“Such Rights”:	  	shall have the meaning ascribed thereto under Article 11.5 hereof.

  

	1.2	 The references to any PRC Law herein shall be deemed: 

 

	 	(1)	 simultaneously to include the references to the amendments, changes, supplements and re-enactment of such PRC Law, irrespective of whether they take effect before or after the execution of the Agreement; and 

  

	 	(2)	 simultaneously to include the references to other decisions, notices and regulations enacted in accordance with
stipulation of PRC laws or effective as a result thereof. 

  

	1.3	 Except as otherwise stated in the context herein, all references to an article, clause, item or paragraph
herein shall refer to the corresponding part of the Agreement. 

 Article 2 Grant of Equity Transfer Option 

 

	2.1	 Parties A hereby agree to grant Party B an irrevocable, unconditional and exclusive Equity Transfer Option.
Pursuant to such Equity Transfer Option, Party B is entitled to, to the extent permitted by the PRC Law, request Parties A to transfer the Option Equity to Party B or its designated entity or individual according to the terms and conditions of the
Agreement. Party B also agrees to accept such Equity Transfer Option. 

	2.2	 The Company hereby agrees that Parties A grant such Equity Transfer Option to Party B according to Article 2.1
above and other provisions of the Agreement. 

 Article 3 Method of Exercise of Option 

 

	3.1	 Subject to the terms and conditions of the Agreement, Party B shall have the absolute sole discretion to
determine the specific time, method and times of its Exercise of Option to the extent permitted by the PRC Law. 

  

	3.2	 Subject to the terms and conditions of the Agreement and to the extent not in violation of the then effective
PRC Law, Party B shall have the right to, at any time, request to acquire all or part of the Company’s equity from Parties A by itself or through other entity or individual designated by it. 

 

	3.3	 With regard to the Equity Transfer Option, at each Exercise of Option, Party B shall have the right to
arbitrarily determine the amount of the Transferred Equity which shall be transferred by Parties A to Party B and/or other entity or individual designated by it. Parties A shall transfer the Target Equity to Party B and/or other entity or individual
designated by it in the amount requested by Party B. Party B and/or other entity or individual designated by it shall pay the Transfer Price with respect to the Target Equity acquired at each Exercise of Option to Parties A transferring such Target
Equity. 

  

	3.4	 At each Exercise of Option, Party B may acquire the Target Equity by itself or designate any third party to
acquire all or part of the Target Equity. 

  

	3.5	 Having decided each Exercise of Option, Party B shall issue to Parties A a notice for exercising the Equity
Transfer Option (hereinafter referred to as “Exercise Notice”, the form of which is set out in Annex II hereto). Parties A shall, upon receipt of the Exercise Notice, forthwith make a
one-time transfer of all the Target Equity of the amount specified in the Exercise Notice in accordance with the Exercise Notice to Party B and/or any other entity or individual designated by Party B in such
method as described in Article 3.3 hereof. 

 Article 4 Transfer Price 

 

	4.1	 With regard to the Equity Transfer Option, Party B or any entity or individual designated by the it shall pay
the corresponding Transfer Price which shall be the lowest price permitted by the then effective PRC laws and regulations to Parties A in proportion to the corresponding ownership ratio at each Exercise of Option before it requests Parties A to
complete the relevant industrial and commercial registration of changes for equity transfer. Parties A agree that once such Transfer Price is received, they will (i) repay the loans under the Loan Agreement (including the its amendments,
supplements or restatements from time to time) executed on the same day as the Agreement to Parties A and Party B with the Transfer Price, and/or (ii) return it legally to Party B or any entity or individual designated by Party B.

 Article 5 Representations and Warranties 

 

	5.1	 Parties A hereby severally and jointly represent and warrant that: 

 

	 	(1)	 If they are Chinese citizens or limited liability companies, they have full capacity for civil conduct and
civil rights, have independent legal status, are duly authorized to execute, deliver and perform the Agreement and may act as the subject of litigation independently. If they are other organizations, they are duly authorized to execute, deliver and
perform the Agreement and may act as the subject of litigation independently. 

  

	 	(2)	 They have the full power and authority to execute, deliver and perform the Agreement and all other documents
relating to the transaction specified herein and to be executed by them. They have the full power and authority to consummate the transaction specified herein. The execution and performance of the Agreement do not violate or conflict with all
applicable laws in force, any agreement to which they are parties or which binds on their assets, any court judgement, any arbitration award, or any decision of administrative authorities. 

 

	 	(3)	 This Agreement is legally and duly executed and delivered by Parties A. This Agreement shall constitute their
legal and binding obligations and may be enforceable against them in accordance with the terms of the Agreement. 

  

	 	(4)	 Parties A are the registered legitimate owners of the Option Equity as of the effective date of the Agreement,
and except for the pledge set under the Equity Pledge Agreement (including its amendments, supplements or restatements from time to time) signed by Party B and Parties A on the same day as the Agreement and entrusted rights set under the
Shareholders’ Voting Right Entrustment Agreement (including its amendments, supplements or restatements from time to time) signed on the same day as the Agreement, the Option Equity is free from and clear of any lien, pledge,
claim and other rights to secured properties and third party rights. Pursuant to the Agreement, Party B and/or other entity or individual designated by it may, after the Exercise of Option, acquire a good title to the Target Equity, free from and
clear of any lien, pledge, claim and other rights to secured properties or third party rights. 

  

	 	(5)	 Unless as mandatorily required by the PRC Law, Parties A shall not request the Company to declare the
distribution of or in practice release any distributable profit, bonus or dividend; Parties A shall, in compliance with the PRC Law, promptly gift any profit, bonus or dividend obtained by them from the Company after the execution of the Agreement
to Party B and/or any qualified entity or individual designated by Party B (after deducting relevant taxes). 

  

	5.2	 Party B hereby represents and warrants that: 

 

	 	(1)	 Party B is a wholly foreign-owned enterprise duly incorporated and legally existing under the PRC Law with an
independent legal personality. Party B has the complete and independent legal status and legal capacity to execute, deliver and perform the Agreement and may act as the subject of litigation independently. 

	 	(2)	 Party B has the full internal corporate power and authority to execute, deliver and perform the Agreement and
all other documents relating to the transaction specified herein and to be executed by it. It has the full power and authority to consummate the transaction specified herein. 

 

	 	(3)	 This Agreement is legally and duly executed and delivered by Party B. This Agreement shall constitute the legal
and binding obligation against it. 

 Article 6 Undertakings by Parties A 

 

	6.1	 Parties A hereby severally undertake that: 

 

	 	6.1.1	 Within the validity period of the Agreement, without Party B’s prior written consent:

  

	 	(1)	 Parties A shall not transfer or otherwise dispose of any Option Equity or create any right to secured property
or other third party rights on any Option Equity; 

  

	 	(2)	 they shall not increase or decrease the Company Registered Capital or cause the Company to be merged with any
other entity; 

  

	 	(3)	 they shall not dispose of or cause the management of the Company to dispose of any material Company assets
(excluding those generated during normal operation); 

  

	 	(4)	 they shall not terminate or cause the management of the Company to terminate any Material Agreement entered
into by the Company, or enter into any other agreement in conflict with the existing Material Agreements; 

  

	 	(5)	 they shall not appoint or remove and replace any director or supervisor of the Company or any other management
personnel of the Company who shall be appointed or removed by Parties A; 

  

	 	(6)	 they shall not cause the Company to declare the distribution of or in practice release any distributable
profit, bonus or dividend; 

  

	 	(7)	 they shall not cause the Company to be terminated, liquidated or dissolved; 

 

	 	(8)	 they shall not amend the articles of association of the Company; and 

 

	 	(9)	 they shall ensure that the Company will not lend or borrow any money (except as required in the ordinary course
of business), or provide any warranty or engage in guarantee activities in any other form, or bear any substantial obligations other than those incurred during normal operation. 

 

	 	6.1.2	 Within the validity period of the Agreement, Parties A will not engage in any act or omission which may damage
the Company Assets and goodwill or affect the validity of the Business Permits of the Company. 

	 	6.1.3	 Within the validity period of the Agreement, Parties A shall promptly notify Party B of any circumstances that
may have a material adverse effect on the existence, business operations, financial position, assets or goodwill of the Company. 

  

	 	6.1.4	 Once Party B gives the Exercise Notice: 

 

	 	(1)	 Parties A shall promptly take all necessary actions to transfer all the Target Equity at the Transfer Price to
Party B and/or any other entity or individual designated by Party B, and waive any right of first refusal enjoyed by them (if any); 

  

	 	(2)	 Parties A shall promptly enter into an equity transfer agreement with Party B and/or any other equity or
individual designated by Party B to agree to transfer all the Target Equity at the Transfer Price to Party B and/or any other entity or individual designated by Party B, and provide necessary support to Party B (including causing the Company to
convene a shareholders’ meeting to pass the resolutions on equity transfer, provision and execution of all relevant legal documents, performance of all government approval and registration procedures and assumption of all relevant obligations)
in accordance with Party B’s requirements and laws and regulations so that Party B and/or any other entity or individual designated by Party B may acquire all the Target Equity, free from and clear of any legal defect or any right to secured
property, third party restriction created by Parties A or any other restrictions. 

 Article 7 Confidentiality
Obligations 
  

	7.1	 During the term of the Agreement and upon the termination of the Agreement, any of the Parties shall keep
strictly confidential all the trade secrets, proprietary information, customer information and all other information of a confidential nature about the other Parties coming to its knowledge during execution and performance of the Agreement
(hereinafter collectively referred to as the “Confidential Information”). Unless a prior written consent is obtained from the Party disclosing the Confidential Information or unless it is required to be disclosed to
third parties according to relevant laws and regulations or the requirement of the place where a Party’s affiliate is listed, the Party receiving the Confidential Information shall not disclose to any other third party any Confidential
Information. The Party receiving the Confidential Information shall not use or indirectly use any Confidential Information other than for the purpose of performing the Agreement. 

 

	7.2	 The following information shall not be deemed part of the Confidential Information: 

 

	 	(1)	 any information previously known by the Party receiving the information through legal means as proved by
documentary evidence; 

  

	 	(2)	 information that enters the public domain not due to the fault of the Party receiving the information; or

  

	 	(3)	 any information lawfully acquired by the Party receiving the information through other sources after its
receipt of such information. 

	7.3	 The Party receiving the information may disclose the Confidential Information to its relevant employees, agents
or professionals engaged by it. However, the Party receiving the information shall enter into confidentiality agreement or relevant commitment letter with the aforesaid persons to ensure that they comply with the relevant terms and conditions of the
Agreement, and shall be responsible for any liability incurred as a result of such persons’ breach of the relevant terms and conditions of the Agreement. 

 

	7.4	 Notwithstanding any other provisions herein, the effect of this article shall not be affected by termination of
the Agreement. 

 Article 8 Duration of the Agreement 

 

	8.1	 This Agreement shall take effect after being duly executed by the Parties, and terminate after all the Option
Equity are lawfully transferred to Party B and/or any other entity or individual designated by Party B pursuant to the provisions of the Agreement, unless the Parties agree otherwise. 

Article 9 Notices 
  

	9.1	 Any notice, request, demand and other correspondences required by the Agreement or made in accordance with the
Agreement shall be delivered in writing to the relevant Party. 

  

	9.2	 Any notice hereunder shall be sent to the following addresses (unless changes of address are notified in
writing) by personal delivery, facsimile or registered mail. It shall be deemed as served on the date of receipt recorded on the receipt of the registered mail if posted by registered mail; it shall be deemed as served on the date of transmission if
delivered in person or transmitted by facsimile. If it is transmitted by facsimile, the original shall be sent to the following addresses by registered mail or personal delivery. 

Party B: Nanjing Xinmu Information Technology Co., Ltd. 

Address: No. 10-396, Fenghuang Street, Jiangpu Street, Pukou District, Nanjing 

Tel: *********** 
 Email:
4*********** 
 Recipient: Chao GUO 

Party A: Chao GUO 
 Address: 

Fax: 
 Tel: *********** 

Email: *********** 
 Party A:
Zhongshu ZHAI 
 Address: 
 Fax:

 Tel: *********** 
 Email:
*********** 

 Company: Nanjing Xingmu Biotechnology Co., Ltd. 

Address: Room 201, Building 6 (Yuetalou), 18 Fenghua Road, Yuhua Economic Development Zone, Nanjing 

Tel: *********** 
 Email:
*********** 
 Recipient: Chao GUO 

Article 10 Default Liability 
  

	10.1	 The Parties agree and confirm that, if any of the Parties (hereinafter referred to as the “Defaulting
Party”) substantially violates any provision of this agreement or substantially fails to perform or delays performance of any of the obligations hereunder, such violation, failure or delay shall constitute a default under the Agreement
(hereinafter referred to as “Default”). The non-defaulting Party shall have the right to request the Defaulting Party to rectify such Default or take remedial actions within a reasonable
period. If the Defaulting Party fails to rectify such Default or take remedial actions within the reasonable period or within ten (10) days after the non-defaulting Party notifies the Defaulting Party in
writing requesting the Default to be rectified, then the non-defaulting Party is entitled to decide at its own discretion that: 

 

	 	(1)	 if any of Parties A is the Defaulting Party, Party B shall be entitled to terminate the Agreement and require
the Defaulting Party to compensate for the damages; 

  

	 	(2)	 if Party B is the Defaulting Party, the non-defaulting Party shall be
entitled to require the Defaulting Party to compensate for the damages, but unless otherwise stipulated by laws or agreed among all Parties, the non-defaulting Party has no right to terminate or cancel the
Agreement in any circumstances. 

  

	10.2	 Notwithstanding any other provisions herein, the effect of this article shall not be affected by termination of
the Agreement. 

 Article 11 Miscellaneous 

 

	11.1	 This Agreement is written in Chinese and executed in duplicate originals, with one (1) original to be
retained by each Party hereto. 

  

	11.2	 The execution, effectiveness, performance, revision, interpretation and termination of the Agreement shall be
governed by the PRC Law. 

  

	11.3	 Any dispute arising out of and in connection with the Agreement shall be resolved through negotiation among the
Parties. In case the Parties fail to reach an agreement within thirty (30) days after the dispute arises, such dispute shall be submitted to Nanjing Arbitration Commission for arbitration in Nanjing in accordance with such Commission’s
arbitration rules in effect at the time. The language used in arbitration shall be Chinese and the arbitration award shall be final and equally binding on the Parties hereto. 

	11.4	 None of the rights, powers or remedies granted to any Party by any provision herein shall preclude any other
rights, powers or remedies available to such Party at law and under the other provisions of the Agreement. In addition, a Party’s exercise of any of its rights, powers and remedies shall not exclude such Party from exercising any of its other
rights, powers and remedies. 

  

	11.5	 No failure or delay by a Party in exercising any rights, powers and remedies available to it hereunder or at
law (hereinafter referred to as “Such Rights”) shall result in a waiver of Such Rights, nor shall the waiver of any single or part of Such Rights shall exclude such Party from exercising Such Rights in any other way and exercising
other Such Rights. 

  

	11.6	 The Annexes set forth in this contract is an integral part of it and shall have the same legal effect as the
provisions of the main body of it. 

  

	11.7	 The headings of the provisions herein are for reference only, and in no event shall such headings be used for
or affect the interpretation of the provisions hereof. 

  

	11.8	 Each provision contained herein shall be severable and independent from each of the other provisions. If any
one or more provisions herein become(s) invalid, illegal or unenforceable at any time, the validity, legality and enforceability of the remaining provisions herein shall not be affected as a result thereof. 

 

	11.9	 This Agreement, once executed, shall supersede any other legal documents previously executed by and among the
Parties with respect to the subject hereof. Any amendment or supplement hereto shall be made in writing and shall become effective only upon due execution by the Parties hereto. 

 

	11.10	 Without the prior written consent of Party B, Parties A or the Company shall not transfer any of their rights
and/or obligations hereunder to any third party; Parties A and the Company hereby agree that Party B shall have the right to transfer any of its rights and/or obligations hereunder to any third party after notifying Parties A and the Company in
writing. 

  

	11.11	 This Agreement shall be binding on the legal assignees or successors of the Parties. 

[The remainder of this page is intentionally left blank] 

 [Signature Page of Exclusive Call Option Agreement] 

IN WITNESS WHEREOF, the following Parties have executed this Exclusive Call Option Agreement on the date first above written. 

Nanjing Xinmu Information Technology Co., Ltd. 
 (Seal) 

/s/ Seal of Nanjing Xinmu Information Technology Co., Ltd. 
  

			
	Signature: 	 	 /s/ Chao GUO

	Name:	 	Chao GUO
	Title:	 	General Manager

 Nanjing Xingmu Biotechnology Co., Ltd. 

(Seal) 
 /s/ Seal of Nanjing Xingmu Biotechnology Co., Ltd. 

 

			
	Signature: 	 	 /s/ Chao GUO

	Name:	 	Chao GUO
	Title:	 	General Manager

			
		
	Chao GUO	 	 /s/ Chao GUO

			
		
	Zhongshu ZHAI	 	 /s/ Zhongshu ZHAI

 Annex I: 

General Information of the Company 

Company name: Nanjing Xingmu Biotechnology Co., Ltd. 

Ownership structure: 
  

									
	 Names of shareholders
	  	Contribution in the
Company Registered
Capital (RMB)	 	  	Shareholding
percentage	 
	 Chao GUO
	  	 	2,500,000	 	  	 	42.75	% 
	 Zhongshu ZHAI
	  	 	2,500,000	 	  	 	42.75	% 
	 Guangcheng (Shanghai) Information Technology Co., Ltd.
	  	 	847,950	 	  	 	14.50	% 
		  	  
	  
	 	  	  
	  
	 
	 Total
	  	 	5,847,950	 	  	 	100.00	% 
		  	  
	  
	 	  	  
	  
	 

 Annex II: 

Form of Exercise Notice 
 To:
[Names of Parties A] 
 Whereas: we entered into an Exclusive Call Option Agreement (the “Option Agreement”) with you and Nanjing Xingmu
Biotechnology Co., Ltd. (the “Company”) on [●] stipulating that you shall transfer the equity you hold in the Company to us or any third party designated by us at our request to the extent permitted by the PRC laws and
regulations. 
 Therefore, we hereby give this notice to you as follows: 

We hereby require to exercise the Equity Transfer Option under the Option Agreement and we/[●] [name of company/individual] designated by us will
acquire the [●]% of the equity you hold in the Company (the “Proposed Acquired Equity”). Upon your receipt of this notice, you shall immediately transfer all the Proposed Acquired Equity to us/[name of designated
company/individual] pursuant to the provisions of the Option Agreement and complete the necessary industrial and commercial registration of changes or other procedures. 

Best regards 
  

	
	Nanjing Xingmu Biotechnology Co., Ltd. (Seal)
	
	Authorized representative:                         
	
	Date:EX-10.17

 Exhibit 10.17 

Loan Agreement 
 This Loan Agreement
(hereinafter referred to as the “Agreement”) was entered into by and between the following two parties on 26 September 2019 in Nanjing, the PRC: 
  

	(1)	 Nanjing Xinmu Information Technology Co., Ltd. (hereinafter referred to as the “Lender”), a
company incorporated and subsisting under the laws of the People’s Republic of China (hereinafter referred to as the “PRC”), with its registered address of No. 10-396, Fenghuang
Street, Jiangpu Street, Pukou District, Nanjing; 

  

	(2)	 Certain shareholders of Nanjing Xingmu Biotechnology Co., Ltd. (hereinafter referred to as the
“Borrowers”) 

 Chao GUO 

ID number: *********** 

Residential address: *********** 

Zhongshu ZHAI 
 ID number:
*********** 
 Residential address: *********** 

(The Lender and the Borrowers are individually referred to as a “Party” and collectively as the “Parties.”) 

Whereas: 
  

	1.	 The Borrowers collectively hold 85.5% equity of Nanjing Xingmu Biotechnology Co., Ltd. (hereinafter referred to
as the “Company”). Nanjing Xingmu Biotechnology Co., Ltd. is a company incorporated and subsisting under PRC laws; 

  

	2.	 The Lender intends to provide a loan to the Borrowers for the purpose specified in the Agreement;

  

	3.	 The Borrowers agree to sign an equity pledge agreement with the Lender to pledge all the equity they hold in
the Company to the Lender as a guarantee for the loan. 

 Upon friendly negotiation, the Parties arrive at the following agreement for
mutual observance: 
 Article 1 The Loan 
  

	1.1	 Under the terms of the Agreement, the Lender agrees to provide the Borrowers with an interest-free loan
(hereinafter referred to as the “Loan”) of not more than RMB5.85 million. The loan is a long-term loan and shall last until the Lender sends a notice of call to the Borrowers. During the loan period or extended loan period, the
Borrowers shall make repayment in advance in any of the following circumstances: 

  

	 	(1)	 The 30-day period expires after the Borrowers receive a written notice
of call from the Lender. 

  

	 	(2)	 The Borrowers are deceased or have no or limited capacity for civil conduct; 

	 	(3)	 To the extent permitted by the PRC laws, the Lender or a person designated by it may invest in the principal
activities and other businesses that the Company engages in, and the Lender has issued a written notice regarding the purchase of the Company’s equity to the Party to exercise the purchasing right in accordance with the Exclusive Call Option
Agreement (including the amendments, supplements or restatements thereof); 

  

	 	(4)	 The Borrowers cease to be shareholder of the Company or no longer hold a post in the Company, the Lender or its
affiliated companies for whatsoever reason; 

  

	 	(5)	 The Borrowers have committed or are involved in criminal activities; or 

 

	 	(6)	 The Borrowers are claimed for a compensation of more than RMB500,000 by any third party. 

 

	1.2	 The Lender agrees that under the premise that all the prerequisites specified in Article 3 herein are met (or
wholly or partially waived), the Lender, at its own discretion, will remit the Loan in full to the account designated by the Borrowers within 20 days from the date on which the Lender receives a written notice (the sample of which is set out in
Annex II) of asking for the Loan from the Borrowers and signs on the said written notice. The Borrowers shall issue a receipt of confirmation to the Lender on the day of receiving the aforesaid Loan. The Loan provided by the Lender under the
Agreement applies only to the Borrowers, not to the successors or assignees of the Borrowers. 

  

	1.3	 The Borrowers agree to accept the aforesaid loan provided by the Lender, and hereby agree and warrant that the
loan will be used for investment in the Company or for the business development of the Company. Save with the prior written consent of the Lender, the Borrowers shall not use the aforesaid loan for any other purpose. If the Borrowers, without the
prior written consent of the Lender, use the loan for any other purpose not specified herein, the Borrowers shall, as required by the Lender, immediately repay the loan in full together with the interest calculated as per the maximum interest rate
permitted by the laws. 

  

	1.4	 The Borrowers hereby agree and warrant that save as specified in Article 1.1 hereof, the Borrowers will not
make early repayment during the loan period or the extended loan period without the written notice from the Lender. 

  

	1.5	 If the equity held by the Borrowers in the Company has been transferred to the Lender or other party designated
by the Lender but the equity transferred is insufficient to repay the loan, the Borrowers shall be deemed as having repaid the loan in full, and the Lender shall waive the right to recover the remaining part of the loan. If, according to the
prevailing applicable laws, the consideration for the transfer of the equity in the Company is more than the loan amount, the Borrowers shall pay such difference to the Lender or any person designated thereby by legal means. 

Article 2 Repayment 
  

	2.1	 The Parties hereby unanimously agree and confirm that the Borrowers shall repay the loan hereunder only in the
following two manners: (i) the Borrowers shall transfer all or part of its equity in the Company to any person (domestic legal person or domestic natural person) designated by the Lender, (ii) to the extent permitted by the PRC laws, the
Borrowers shall transfer all or part of its equity in the Company to the Lender. 

	2.2	 The Parties unanimously agree and confirm that any gains (hereinafter referred to as “Such
Gains”) of the Borrowers from transferring their equity in the Company to the entities (domestic legal persons or domestic natural persons) designated by the Lender shall be used to repay the loan hereunder, until the loan is repaid in
full, and the Borrowers shall pay Such Gains to the Lender in the manner designated by the Lender, until this Loan Agreement is terminated upon full repayment of the loan. 

 

	2.3	 The Parties hereby unanimously agree and confirm that to the extent permitted by the prevailing PRC laws, the
Lender shall have the right but is not obligated to purchase at any time all or part of the Borrowers’ equity in the Company subsequent to their acquisition of the loan according to the Exclusive Call Option Agreement (including
amendments, supplements or restatements made thereto from time to time). 

 Article 3 Conditions Precedent for the Loan

  

	3.1	 Only after all the following conditions are satisfied or waived by the Lender in writing shall the Lender be
obligated to provide the loan to the Borrowers according to Article 1.1: 

  

	 	(1)	 The Lender receives on schedule the drawdown notice formally signed by the Borrowers according to Article 1.2;

  

	 	(2)	 The Lender, the Borrowers and other relevant Parties execute the Exclusive Call Option Agreement,
Shareholders’ Voting Rights Proxy Agreement, Exclusive Technology and Consultation Service Agreement, Licensing Agreement for the Use of Intellectual Property Right and Equity Pledge Agreement on the day the
Agreement is executed; 

  

	 	(3)	 The representations and warranties made by the Borrowers under Article 4.2 are true, complete, correct and not
misleading; 

  

	 	(4)	 The Borrowers have not violated any undertakings made thereby under Article 5 herein and no event that may
affect the Borrowers’ fulfilment of obligations under the Agreement occurs or foreseeably occurs. 

 Article 4
Representations and Warranties 
  

	4.1	 From the date of execution of the Agreement to the date of termination thereof, the Lender makes the following
representations and warranties to the Borrowers: 

  

	 	(1)	 The Lender is a company incorporated and legally subsisting under the PRC Laws; 

 

	 	(2)	 The Lender has the right to execute and perform the Agreement. The Lender’s execution and performance of
the Agreement comply with the Lender’s business scope and articles of association or other constitutional documents. The Lender has obtained all necessary and due approvals and authorization for execution and performance of the Agreement; and

  

	 	(3)	 The Agreement shall upon execution constitute the Lender’s legal and valid obligations and shall be
enforceable against the Lender according to laws. 

	4.2	 From the date of execution of the Agreement to the date of termination thereof, the Borrowers represent and
warrant as follows: 

  

	 	(1)	 They have full capacity for civil conduct and civil rights, have independent legal status and may act as the
subject of litigation independently; 

  

	 	(2)	 The Agreement shall upon execution constitute the Borrowers’ legal and valid obligations and shall be
enforceable against the Borrowers according to laws; 

  

	 	(3)	 There is no or no potential dispute, litigation, arbitration, administrative procedures or any other legal
procedures relating to the Borrowers; and 

  

	 	(4)	 The Borrowers’ execution and performance of the Agreement do not violate or conflict with all applicable
laws, any agreement to which they are parties or which is binding on their assets, any court judgement, any award of arbitration authorities or any decision of administrative authorities. 

Article 5 Undertakings by the Borrowers 
  

	5.1	 The Borrowers undertake that during the validity period of the Agreement: 

 

	 	(1)	 They shall use the loans for the purposes specified in the Agreement and try their best to enable the Company
to continue to engage in its principal activities; 

  

	 	(2)	 Without the Lender’s prior written consent, they shall not take any action and/or inaction that may cause
any material effect to the Company’s assets, businesses and responsibilities; 

  

	 	(3)	 If the Borrowers sell the equities held by them in the Company within the range permitted by the Lender, the
Borrowers shall first use all the proceeds for repayment of loans to the Lender. 

 Article 6 Default Liability 

 

	6.1	 If either Party breaches the Agreement so that the Agreement cannot be performed in part or in whole, the said
Party shall bear the default liability and compensate the other Party for the losses (including the resulting legal cost and lawyer’s fee) arising therefrom; if both Parties breach the Agreement, they shall bear their respective liabilities
according to actual conditions. 

  

	6.2	 If the Borrowers fail to fulfil its repayment obligation within the time limit prescribed in the Agreement, the
Borrowers shall pay an overdue interest at 0.01% of the outstanding payables every day until the date on which the Borrowers repay all the loan principals, overdue interests and other monies. 

Article 7 Notices 
  

	7.1	 All notices and other correspondences required or issued under the Agreement shall be sent to the following
addresses of the Parties by personal delivery, registered mail, prepaid or commercial express service or fax. Each notice shall also be served by email. The said notices shall be deemed as served: 

 

	 	(1)	 on the date of sending if sent by personal delivery, express service or registered or prepaid mail;

  

	 	(2)	 on the date they are successfully sent (as evidenced by an automatically generated delivery confirmation), if
sent by fax. 

	7.2	 The addresses of the Parties for receiving notices are as follows: 

Lender: Nanjing Xinmu Information Technology Co., Ltd. 

Address: No. 10-396, Fenghuang Street, Jiangpu Street, Pukou District, Nanjing 

Tel: *********** 
 Email:
*********** 
 Recipient: Chao GUO 

Borrower: Chao GUO 

Address: 
 Fax: 

Email: *********** 
 Tel:
*********** 
 Borrower: Zhongshu ZHAI 

Address: 
 Fax: 

Email: *********** 
 Tel:
*********** 
  

	7.3	 Either Party may change its address for receiving the notices by giving a notice to the other Party at any time
in accordance with the provisions of this article. 

 Article 8 Confidentiality Obligations 

 

	8.1	 Both Parties acknowledge and confirm that any oral or written information related to the Agreement and the
contents thereof or exchanged between them for the preparation or performance of the Agreement is deemed to be confidential. Both Parties shall keep all such confidential information confidential and shall not disclose any confidential information
to any third party without the written consent of the other Party, except for the following information: (a) any information that is or will be in the public domain (except unauthorized disclosure by the Party receiving confidential
information); (b) any information required to be disclosed in accordance with applicable laws and regulations, stock trading rules or orders of government agencies or a court; or (c) information required to be disclosed by any Party to its
shareholders, investors, legal or financial advisers in connection with the transaction described in the Agreement (the said shareholders or legal or financial advisors are also required to be bound by confidentiality obligations similar to those in
this article). Disclosure of confidential information by any employee or agency engaged by either Party shall also be deemed as disclosure of confidential information by that Party, who shall be liable for breach of contract according to the
Agreement. This article shall survive the termination of the Agreement for any reason. 

 Article 9 Governing Laws and Settlement of Disputes 

 

	9.1	 The conclusion, effectiveness, interpretation, performance, modification and termination of the Agreement and
settlement of disputes shall be governed by the PRC laws. 

  

	9.2	 Any dispute arising from interpretation and performance of the Agreement shall preferably be settled through
friendly negotiation between the two Parties hereto. If such dispute is still unable to be settled within 30 days after either Party sends to the other Party a written notice requiring settlement through negotiation, either Party may submit the
dispute to Nanjing Arbitration Commission for arbitration in accordance with its arbitration rules in effect at the time. The arbitration place is Nanjing and the language used is Chinese. The arbitration award shall be final and equally binding on
both Parties. 

  

	9.3	 Upon the occurrence of any dispute arising from the interpretation and performance of the Agreement or during
the pending arbitration of any dispute, except for the matters under dispute, the two Parties hereto shall continue to exercise their respective other rights and perform their respective other obligations under the Agreement. 

Article 10 Miscellaneous 
  

	10.1	 The Agreement shall take effect as from the date of signing by both Parties and shall cease to be effective
after both Parties have completed performing their respective obligations under the Agreement. 

  

	10.2	 The Agreement is written in Chinese and executed in multiple counterparts with equal legal effect, with one
held by either Party. 

  

	10.3	 The two Parties hereto may make amendments and supplements to the Agreement in a written agreement. Any
amendments and/or supplements to the Agreement between the two Parties hereto shall be an integral part of the Agreement and shall have the same legal effect as the Agreement. 

 

	10.4	 In the event that one or several of the provisions of the Agreement are found to be invalid, illegal or
unenforceable in any aspect in accordance with any laws or regulations, the validity, legality or enforceability of the remaining provisions of the Agreement shall not be affected or damaged in any respect. The two Parties shall strive through
amicable negotiation to replace those invalid, illegal or unenforceable provisions with effective provisions to the greatest extent permitted by law and of the expectation of the two Parties, and the economic effect of such effective provisions
shall be as close as possible to the economic effect of those invalid, illegal or unenforceable provisions. 

  

	10.5	 Annexes (if any) to the Agreement shall be an integral part of the Agreement and shall have the same legal
effect as the Agreement. 

  

	10.6	 Without the prior written consent of the Lender, the Borrowers shall not transfer any of their rights and/or
obligations hereunder to any third party, and the Lender shall have the right to transfer any of its rights hereunder to any third party designated by it after notifying the Borrowers. 

 

	10.7	 The Agreement shall be binding on the legal assignees or successors of both Parties. 

 [The remainder of this page is intentionally left blank] 

 Accordingly, in witness whereof, both Parties have caused their authorized representatives
to sign this Loan Agreement on the first above written date hereof to become effective immediately. 
 Lender: 

Nanjing Xinmu Information Technology Co., Ltd. (Seal) 

/s/ Seal of Nanjing Xinmu Information Technology Co., Ltd. 
  

			
	Signature:	 	 /s/ Chao GUO        

	Name:	 	Chao GUO
	Title:	 	General Manager

			
	
	Borrowers:
		
	Chao GUO	 	 /s/ Chao GUO    

			
		
	Zhongshu ZHAI	 	 /s/ Zhongshu ZHAI        

 Annex I: 

General Information of the Company 

Company name: Nanjing Xingmu Biotechnology Co., Ltd. 

Ownership structure: 
  

									
	 Names of Shareholders
	  	Contribution in the
Company’s Registered
Capital (RMB)	 	  	Shareholding
percentage	 
	 Chao GUO
	  	 	2,500,000	 	  	 	42.75	% 
	 Zhongshu ZHAI
	  	 	2,500,000	 	  	 	42.75	% 
	 Guangcheng (Shanghai) Information Technology Co., Ltd.
	  	 	847,950	 	  	 	14.50	% 
		  	  
	  
	 	  	  
	  
	 
	 Total
	  	 	5,847,950	 	  	 	100.00	% 
		  	  
	  
	 	  	  
	  
	 

 Annex II: 

Notice 
 The Borrowers and the
Lender entered into a loan agreement in [Nanjing], China on [●], under which the Lender agree to provide the Borrowers with a loan of no more than RMB [●]. 

According to the said loan agreement: 

The Borrowers apply to the Lender for the loan of RMB [●] under the loan agreement, and the Lender hereby agree to provide the Borrowers
with the loan of RMB [●] in accordance with this notice. 
 The Borrowers hereby agree to repay the loan to the Lender in accordance
with the loan agreement. 
 Lender: 
 Nanjing Xinmu
Information Technology Co., Ltd. 
 Signature: 
 Name: 

Position: 
 Borrowers: 

 

							
	 Chao GUO
	 		 	 Zhongshu ZHAI 

				
	Signature:	 	  
	 	Signature:

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