Document:

Exhibit 4.2 

Share Subscription Agreement

 

This Share Subscription Agreement (hereinafter
referred to as this “Agreement”) is made and entered into as of [February 27], 2017 (hereafter referred
to as “ Execution Date of this Agreement) by and between:

 

		(1)	Avalon
GloboCare Corp. (hereinafter referred to as “Avalon”), a US listed company, stock code: AVCO, with the registered
address at: 83 South Street, Suite 101, Freehold, NJ 07728, the U.S.;

 

		(2)	Avalon (Shanghai) Healthcare Technology Co., Ltd. (hereinafter
referred to as “Avalon Shanghai”), a wholly owned subsidiary of Avalon, duly incorporated and existing under
the law of the People's Republic of China, with its domicile at: No. 90, lvke Road, Pudong New Area, Shanghai;

 

		(3)	Beijing DOING Biomedical Technology Co., Ltd (hereinafter
referred to as “DOING), a limited liability company duly incorporated and existing under the law of People’s
Republic of China, with its domicile at: Room 529, 5/F, No. 11 Building, 7 North Songyu Road, Chaoyang District, Beijing and

 

		(4)	[Daron. Liang] (hereinafter referred to the “Entrusted
Party”) , Citizen of [United States], Passport Number:[506245270]

 

Avalon, Avalon Shanghai, DOING and the
Entrusted Party are hereinafter individually referred to as a “Party”, and collectively, the “Parties”.

 

Whereas:

 

		1.	Avalon intends to issue 3 million shares privately in February 2017 at a price of USD 1 per share;

 

		2.	DOING intends to subscribe the aforesaid shares at a price of USD 3 million, and commissions the
Entrusted Party to conduct the subscription (hereinafter referred to as this “Subscription”) and hold the shares
on its behalf (hereinafter referred to as “Entrusted Shares”). Upon DOING’s completion of the registration
of the overseas investment with the commerce commission, such entrustment shall be terminated and DOING will take over and directly
hold the shares;

 

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		3.	With regard to the matters above (i) DOING entered into an Entrusted Shareholding Agreement and
a Share Transfer Agreement with the Entrusted Party on the execution date of this Agreement, (ii) Avalon entered into a Subscription
Agreement with the Entrusted Party on the execution date of this Agreement; (iii) The actual controller of Avalon—Lu Wenshao
entered into a Warranty Agreement with DOING on the execution date of this Agreement (above agreements and this Agreement are collectively
called “ Trading Documents”);

 

NOW THEREFORE, the Parties hereby covenant
and agree as follows:

 

		1.	Subscription

 

		1.1	Subscription: The Parties hereby agree that DOING
subscribes the 3 million shares of stocks privately issued by Avalon at a total price of USD 3 million through its Entrusted Party,
which will also hold such shares in the name of DOING;

 

The Parties
hereby agree and confirm that the actual holder of the Entrusted Shares is DOING. Upon DOING’s completion of the registration
of the overseas investment with the commerce commission (as defined below), and upon its request in writing, the Entrusted Party
shall forthwith transfer the Entrusted Shares to DOING. Avalon shall provide assistance in fulfilling the disclosure obligation
and other procedures as required by US Securities Law.

 

		1.2	Payment of Earnest Money: The Parties agree that DOING shall pay the Earnest Money
in RMB which is equivalent to USD 3 million within five (5) business days of execution of the Subscription Agreement in the manner
below:

 

		(i)	DOING shall designate Avalon Shanghai as the receiver of
the Earnest Money;

 

		(ii)	DOING shall deposit a sum of money in RMB which is in amount
equivalent to USD 3 million to the bank account designated by Avalon Shanghai (Appendix 1).

 

		1.3	New issue of shares: Avalon commits to issue the corresponding share certificate to the
Entrusted Party in accordance with the Subscription Agreement within fifteen (15) calendar days of receipt of the Earnest Money
from DOING.

 

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		2.	Share transfer/termination of entrusted shareholding

 

		2.1	Share transfer: If, within one year from the completion of this Subscription (namely, Avalon’s
issuance of the share certificate to the Entrusted Party in accordance with the Subscription Agreement, the same below), DOING
completes the registration of the overseas investment with Beijing Commerce Commission (hereinafter referred to as “Registration”
), the entrusted shareholding relationship between DOING and the Entrusted Party shall be terminated, and the Entrusted Party shall
transfer the Entrusted Shares to DOING at a total price of USD 3 million.

 

On this occasion,
Avalon shall provide assistance in fulfilling the information disclosure obligation and other relevant procedures required by US
Securities Law, including but without limitation: Cancelling the identity of the Entrusted Party as a shareholder, withdrawing
the share certificate in the possession thereof, registering DOING as a shareholder and owner of the Entrusted Shares, and issuing
a new share certificate to DOING.

 

		2.2	Payment The Parties hereby agree that the share transfer-related funds shall be paid in
the following manner:

 

		(1)	DOING, upon completion of the Registration and receipt
of the Enterprise’s Overseas Investment Certificate, issue notice in writing of the same to Avalon Shanghai; Avalon Shanghai
shall, within five (5) business days of receipt of such notice, transfer the Earnest Money in full to the bank account designated
by DOING (Appendix 1);

 

		(2)	DOING shall, within five (5) business days of receipt of
the Earnest Money, transfer it in full to the bank account designated by the Entrusted Party (Appendix 1), as the transfer price
described under the Share Transfer Agreement;
	 	 	 

		(3)	The Entrusted Party shall, upon receiving such fund, transfer
it in full to the bank account designated by Avalon (Appendix 1), as the consideration for the 3 million shares privately issued
by Avalon as described under the Subscription Agreement.

 

The Parties
hereby agree and confirm that DOING, upon completion of the payment described in Paragraph 2 above, shall be deemed as to have
fulfilled its payment obligation hereunder and under other related agreements; Avalon shall issue the share certificate in respect
of the 3 million shares to DOING within fifteen (15) calendar days of receipt of the payment described in Paragraph 2 therefrom,
whether or not it has received the subscription price from the Entrusted Party.

 

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		3.	Reinstatement

 

		3.1	Reinstatement: If DOING fails to complete the Registration and acquire the Enterprise Overseas
Investment Certificate within one year after the completion of this Subscription, Avalon Shanghai shall, after one year has elapsed
since the expiration of this Subscription and upon request of DOING, transfer the lump sum of the Earnest Money and the interest
on capital occupied equivalent to 20% of the Earnest Money to the bank account designated by DOING (Appendix 1). On that occasion,
the Parties shall cooperate with each other in reinstating their conditions to the original state prior to the execution of this
Agreement.

 

		4.	Liability for Breach of the Agreement

 

Either Party’s
failure of or delay in performing any obligation hereunder or to observe the commitment hereunder constitutes a breach hereof.
The observant party shall have the right to hold the breaching party liable for all direct economic losses caused by the non-compliance
of the breaching party.

 

		5.	Miscellaneous 

 

		5.1	Exchange rate: The Parties hereby agree that, with respect to the RMB to the USD exchange
rate hereunder or under any other trading document, the rate promulgated by China Foreign Exchange Trade System on the day of payment
shall prevail. The losses caused by exchange rate movement shall be borne by the Parties on their own.

 

		5.2	Termination: If Avalon fails to receive the Earnest Money described in Article 1.2 from
DOING within seven (7) business days after this Agreement comes into force, Avalon has the right to terminate this Agreement and
other related trading documents by giving written notice to other parties concerned.

 

		5.3	Confidentiality: The Parties hereby agree to keep strict confidential contents of this Agreement
and related matters, and not to disclose any of them to any third party.

 

		5.4	Effectiveness: This Agreement shall become effective and be binding upon the Parties after
being singed by the Parties. The Parties hereby agree that if there is any conflict or inconsistency between other trading documents
and this Agreement, this Agreement shall prevail.

 

		5.5	Governing Law: This Agreement shall be governed by and construed in accordance with the
law of the People’s Republic of China.

 

		5.6	Dispute resolution: All disputes arising from or in relation to the performance of this
Agreement shall be settled through amicable negotiation. If negotiation fails, either party may submit the dispute to Beijing Arbitration
Commission for arbitration in accordance with the arbitration rules then in effect. The place of arbitration is Beijing. The arbitral
award is final and binding upon the Parties, and the Parties hereby agree to waive the right of filing a lawsuit in respect thereof.

 

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		5.7	Counterparts: This Agreement is written in Chinese. It is made out in four counterparts,
each of which is held by a Party respectively and all of which are equally authentic.

 

In witness whereof, the Parties hereto
have executed this Agreement on the date first above written.

 

[No text below]

 

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[For signature only]

 

Avalon GloboCare Corp.

 

Authorized representative (signature):/s/David
Jin

 

Avalon (Shanghai) Healthcare Technology
Co., Ltd. (common seal)

 

Legal or authorized representative (signature):/s/Meng
Li

 

Beijing DOING Biomedical Technology Co.,
Ltd (common seal)

 

Legal or authorized representative (signature):________________________________

 

Entrusted Party:[Daron. Liang]

 

Signature:/s/Daron Liang

 

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Appendix 1 Details of Designated Bank
Accounts

 

	Bank account designated by Avalon
	Bank Name:
	Account Number:
	Name Account:
	SWIFT:
	Routing & Transit:
	 
	 
	Bank account designated by Avalon Shanghai
	Account Number:
	Name Account:
	Bank Name:
	
         

        Bank account designated by DOING

	Name Account:
	Account Number:
	Bank Name:
	
         

        Bank account designated by the Entrusted Party

	Bank Name:
	Account Number:
	Name Account:
	SWIFT:
	Routing & Transit:

 

     7Exhibit 4.3

 

Warranty Agreement

 

This Warranty Agreement (hereinafter
referred to as this “Agreement”) is made and entered into as of February 27, 2017 by and between:

 

Party A: Lu Wenzhao

 

Passport Number:

 

Nationality:[ United States of American]

 

Address: [ 710, Reignwood Center, Yong’an
Dongli, Chaoyang, Beijing]

 

Party B: Beijing DOING Biomedical Technology
Co., Ltd.

 

Legal representative or authorized representative:
Tang Yonghong

 

Address: Room 529, 5/F, No. 11 Building,
7 North Songyu Road, Chaoyang District, Beijing

 

Party A and Party B are hereinafter referred
to individually as a "Party" and collectively, the "Parties".

 

Whereas:

 

		(1)	Party
A is the actual holder of Avalon Globocare Corp (hereinafter referred to as “Avalon” , stock code: AVCO)
and Avalon intends to issue 3 million shares privately in February 2017 at a price of USD 1 per share;

 

		(2)	Party
B and the third party [ DARON LIANG ] (hereinafter referred to as the “Entrusted Party”, which is jointly recommended
by Avalon and Party A) entered into a Entrusted Shareholding Agreement, under which, Party B commissions the Entrusted Party to
subscribe the aforesaid 3 million shares at a price of USD 3 million and hold such shares in its name (“Entrusted Shares,
the Subscription is hereinafter referred to as this “Subscription);

 

		(3)	If
Party B completes the registration of the overseas investment with the commerce commission within one year after the completion
of this Subscription, relevant parties will coordinate to terminate the entrusted shareholding relationship between Party B and
the Entrusted Party and Party B will directly hold such shares issued by Avalon; If Party B fails to complete the Registration
within such a period of time, relevant parties will coordinate to comply with relevant provisions in the Share Subscription Agreement;
and

 

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		(4)	With regard to the matters above, (i) Party B entered into
an Entrusted Shareholding Agreement and a Share Transfer Agreement with the Entrusted Party on the date of this Agreement; (ii)
Avalon entered into a Subscription Agreement with the Entrusted Party on the execution date of this Agreement; (iii) Avalon, Avalon
(Shanghai) Health Care System Co., Ltd (hereinafter referred to as “ Avalon Shanghai), Party B and the Entrusted
Party entered into a Share Subscription Agreement on the execution date of this Agreement (above agreements and this Agreement
are collectively called “ Trading Documents”);

 

Now Therefore, the Parties hereby covenant
and agree as follows;

 

1. Party A hereby agrees and warrants that,

 

		(1)	It
will use its best efforts to cause Avalon and the Entrusted Party to fulfill their obligations under the Share Transfer Agreement
and the Entrusted Shareholding Agreement; Party A hereby warrants that it will cause Avalon to promise that it will be jointly
liable for any default by the Entrusted Party if any.

 

		(2)	If,
within one year from the completion of this Subscription (namely, Avalon’s issuance of the share certificate to the Entrusted
Party in accordance with the Subscription Agreement, the same below), Party B completes the registration of the overseas investment
with the commerce commission (as defined in the Share Subscription Agreement), Party A shall use its best efforts to cause the
Entrusted Party, Avalon and Avalon Shanghai to fulfill their obligations under corresponding trading documents, and to cause the
Entrusted Party and Party B to terminate the entrusted shareholding relationship so that Party B will directly hold such shares.

 

		(3)	Upon
the request of Party B at any time before three years have elapsed since the first year of expiration of this Subscription, Party
A shall purchase the shares of Avalon held by Party B in full or in part at the price of USD 1.2 per share (not subject to the
impact of payment of dividends, share consolidation or division) (hereinafter referred to as “Share Repurchase”),
provided that Party B has issued three months’ prior written notice thereto.

 

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		(4)	Upon
receiving such notice from Party B, Party A shall complete the Share Repurchase within three months. If Party A fails to fulfill
its repurchase obligation within the period of time, Party A is liable for payment of interest on the share repurchase price calculated
from the expiration of such period at an annual interest rate of 15%.

 

2. Party A hereby agrees and warrants that
if Party B fails to complete the Registration within one year after the completion of this Subscription, Party A shall use its
best efforts to cause Avalon Shanghai to transfer the lump sum of the Earnest Money (as defined in the Share Subscription Agreement)
and the interest on capital occupied equivalent to 20% of the Earnest Money to the bank account designated by Party B one year
after the expiration of this Subscription upon request of Party B, and Party A shall be jointly liable for the payment obligation
described above.

 

3. Party B hereby agrees and warrants that
it shall not direct the Entrusted Party to transfer in any way the Entrusted Shares issued by Avalon to any person other than Party
A or the third party designated by Party A, unless otherwise agreed by Party A in writing.

 

4. All disputes arising from or in relation
to this Agreement shall be resolved by the Parties through friendly negotiation. If negotiation fails, either party may submit
the dispute to Beijing Arbitration Commission for arbitration in accordance with the arbitration rules then in effect. The place
of arbitration is Beijing. The arbitral award is final and binding upon the Parties, and the Parties hereby agree to waive the
right of filing a lawsuit in respect thereof.

 

5. For the purpose hereof, this Agreement
shall be governed by the law of the People's Republic of China, excluding Hong Kong, Macao and Taiwan.

 

6. This Agreement shall come into force
after being signed and sealed by the Parties. This Agreement is made out in two counterparts, each of which is held by one party
and both of which are equally authentic.

 

7. This Agreement shall supersede the Commitment
Letter issued by Party A to Party B on January 22, 2017. The Commitment Letter shall become null and void after this Agreement
comes into force.

 

(No text below)

 

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(For signature only)

 

Party A: Lu Wenzhao

 

Signature: /s/ Lu Wenzhao

 

Party B: Beijing DOING Biomedical Technology
Co., Ltd:

 

Legal representative or authorized representative
(signature): /s/______________

 

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