Document:

English translation of Supplementary Agreement dated November 10, 2011

 Exhibit 10.16 
 Supplementary Agreement to Exclusive Business Cooperation Agreement 
 This
Supplementary Agreement to Exclusive Business Cooperation Agreement (the “Supplementary Agreement”) is entered into by and among the following parties on November 10, 2011: 

 

			
	Party A:	  	Duowan Entertainment Information Technology (Beijing) Company
		
	Address:	  	Room B1507, Huizhi Building, No. 9 Xueqing Road, Haidian District, Beijing
		
	Party B:	  	Beijing Tuda Science and Technology Company Limited
		
	Address:	  	Suite B1506, Huizhi Plaza, 9 Xueqing Road, Haidian District, Beijing

 WHEREAS: 

(A) Party A and Party B entered into the Exclusive Business Cooperation Agreement on December 3, 2009 (the “Original Agreement”);

 (B) Both parties propose to revise Section 6.2 of the Original Agreement. 
 Through friendly negotiation, the parties hereto agree to supplement the Original Agreement as follows: 
 1. Section 6.2 of Original Agreement shall be deleted and be replaced by the following: 
 “6.2 Within the term of the Agreement, Party B shall not terminate the Agreement under any circumstance. Party A is entitled to terminate the Agreement by written notice to Party B 30 days in
advance.” 
 2. The Original Agreement shall be applied to the matters not provided in this Supplementary Agreement.

 3. This Supplementary Agreement shall prevail should there be any inconsistency between the Original Agreement and this
Supplementary Agreement. 
 4. This Supplementary Agreement shall be executed in two originals, each party holding one original.
All the originals shall have the same legal effect. 
 Both parties authorize their authorized representatives to sign this Supplementary
Agreement on the date indicated above and to make effective upon signing. 

  
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 Party A: Duowan Entertainment Information Technology (Beijing) Company (Seal) 

 

			
	Signature:	  	/s/ Xueling Li
	Name:	  	Xueling Li
	Position:	  	Legal Representative/Authorized Representative

 Party B: Beijing Tuda Science and Technology Company Limited (Seal) 

 

			
	Signature:	  	/s/ Jin Cao
	Name:	  	Jin Cao
	Position:	  	Legal Representative/Authorized Representative

  
 2English translation of Confirmation Letter dated November 10, 2011

 Exhibit 10.17 
 Confirmation Letter 
 Duowan Entertainment Information Technology (Beijing) Company
(“Beijing Duowan”) and Beijing Tuda Science and Technology Company Limited (“Beijing Tuda”) have entered into an Exclusive Business Cooperation Agreement (the “Original Agreement”) on December 3, 2009. According to
Section 2 of the Original Agreement, both parties confirm the fee rate and payment of services as follows: 
 1. Fee rate of services:
Beijing Tuda shall, according to the Original Agreement, pay services fees to Beijing Duowan at the rate of not more than 100% of Beijing Tuda’s annual audited net income of each year. 
 2. Payment time: The time of paying services fees above shall be determined by Beijing Duowan according to actual situation. Beijing Tuda shall arrange payment after receiving written notice from Beijing
Duowan. 
 3. This confirmation letter shall prevail should there be any inconsistency between the Original Agreement and this confirmation
letter. 
 Party A: Duowan Entertainment Information Technology (Beijing) Company (Seal) 

 

			
	Signature:	  	/s/ Xueling Li
	Name:	  	Xueling Li
	Position:	  	Legal Representative/Authorized Representative

 Party B: Beijing Tuda Science and Technology Company Limited (Seal) 

 

			
	Signature:	  	/s/ Jin Cao
	Name:	  	Jin Cao
	Position:	  	Legal Representative/Authorized Representative

 Date: November 10, 2011 

  
 1English translation of Exclusive Technology Support and Technology Services

 Exhibit 10.18 
 Exclusive Technology Support and Technology Service Agreement 
 This Exclusive Technology
Support and Technology Services Agreement (the “Agreement”) is executed by the following parties on December 3, 2009 in Beijing: 
  

			
	Party A:	  	Duowan Entertainment Information Technology (Beijing) Company Limited
	Address:	  	Suite 1707C3, Qingyun Dangdai Plaza, No.9 Mantingfangyuan Community, Qingyunli, Haidian District, Beijing
		
	Party B:	  	Beijing Tuda Science and Technology Company Limited
	Address:	  	Suite D1815, Shangdi Huihuang International Center, No. 5 Shangdi Information Industry Base North Region, Haidian District, Beijing

 Whereas: 
  

	 	1.	Party A is a duly registered and established wholly foreign owned enterprise, has strong Internet technology development and supporting strength, and rich experience in
providing technology support and services; and 

  

	 	2.	Party B needs professional technology company to provide technology support and services during its operation. 

Based on the above, through friendly negotiation and based on the principles of equality and reciprocity, both parties agree to the following provisions
and intend to be bound by such provisions: 
  

	Article I	Technology Support and Technology Services 

  

	1.1	Party A agrees to provide to Party B, and Party B agrees to accept from Party A, the technology support and services in accordance with the terms and conditions of this
Agreement, the detailed contents of which are as follows: 

  

	 	(1)	To make research and development of relevant software and technologies according to Party B’s business needs; 

 

	 	(2)	To be responsible for daily maintenance, supervision, testing and debugging for Party B’s computer network equipment; 

 

	 	(3)	To provide technology consultation and answers to Party B’s technology question regarding network equipment, technology products and software; and

  

	 	(4)	To provide other relevant technology support and services to Party B in accordance with this Agreement. 

  
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	1.2	Party B shall actively cooperate with Party A to complete the above support and services, including, but not limited to, providing relevant data, technology
specifications and instructions. 

  

	1.3	The service term under this Agreement is 20 years commencing on the effective date of the Agreement. The parties agree to grant Party A an option to extend the term of
this Agreement. Before expiration of this Agreement, Party A is entitled to extend the term of this Agreement for 10 years by written notification. Party A may use its option to extend the term of this Agreement for unlimited times.

  

	1.4	Party A shall be the exclusive provider of the technology support and services under this Agreement to Party B; without Party A’s prior written consent, Party B
shall not accept any technology support or services from any third parties. 

  

	1.5	Party A has sole and exclusive rights to and interests in any rights, ownership, interests and all intellectual property including but not limited to copyrights,
patents, technology secrets, commercial secrets and others, arising from the performance of this Agreement, whether developed by Party B or Party A. The parties agree that this article survives the modification, termination or expiration of this
Agreement. 

  

	Article II	Service Fees 

  

	2.1	The parties agree that Party B shall pay services fees to Party A in accordance with the Appendix to this Agreement as consideration for the technology support
and services provided by Party A under Section 1.1 of this Agreement, the amount and payment method of which are set forth in such Appendix. The Appendix may be amended by both parties according to their negotiation and the
implementation of the Agreement. 

  

	Article III	Confidentiality 

  

	3.1	For the purpose of this Agreement, Confidential Information include, but is not limited to, all or any part of the following contents or information: technology
information, materials, plans, drawing, data, indicators, standards, software, computer applications, network design materials provided by one party to the other party with respect to technology development, design, research, production, manufacture
and repair; any contracts, agreements, memorandum, appendix, draft or minutes executed for the purpose of this Agreement (including this Agreement); and any notice given by one party to the other party for the purpose of this Agreement without
indicating such information as public information when provided. Upon the termination of this Agreement, Party A shall return or destroy, in accordance with Party B’s requirements, any documents, materials or software that contain Confidential
Information, and delete any Confidential Information from any memory device, and refrain from using such Confidential Information any longer. 

  
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	3.2	Without prior written consent of the other party, neither party shall disclose Confidential Information by any means to any third parties. 

 

	3.3	Both parties shall adopt necessary measures to restrict the Confidential Information known or understood by it within the scope of relevant employees, agents or
consultants, and require such person to comply with this provision strictly and not disclose the Confidential Information to any third parties. Both parties undertake not to disclose or reveal Confidential Information obtained from the other party
to its irrelevant employees. 

  

	3.4	Under the following circumstances, neither party will be deemed to have disclosed or revealed Confidential Information: 

 

	 	3.4.1	The disclosed information has been known to public before disclosure (not by any means in violation of this provision); 

 

	 	3.4.2	The disclosure is made with the other party’s prior written consent; 

  

	 	3.4.3	The disclosure is made under mandatory requirements by governmental departments, laws or orders, provided that requirements by governmental departments must be issued
by formal documents, otherwise the party shall refuse to comply and shall not disclose or reveal any Confidential Information. 

  

	3.5	If any party violates this provision, such breaching party shall compensate all losses incurred by the non-breaching party. 

 

	Article IV	Breach Liabilities 

  

	4.1	If any party violates the provisions of this Agreement, such breaching party shall compensate all losses incurred by the non-breaching party. 

 

	4.2	Any waiver of the breaching party’s breach may only be made in writing to be effective. The non-exercise or delay in exercise by any party of any rights or
remedies under this Agreement does not constitute waiver of such party; any partial exercise of rights or remedies by any party shall not prejudice such party’s exercise of other rights or remedies. 

 

	4.3	The effectiveness of this Article IV shall not be affected by the expiration or termination of this Agreement. 

 

	Article V	Force Majeure 

  

	5.1	Under this Agreement, force majeure means wars, fires, earthquakes, floods, rainstorms, snowstorms and other natural disasters; or other events that cannot be foreseen,
overcome or avoided by the parties when entering into this Agreement. 

  
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	5.2	If a party cannot perform or delay to perform all or part of its obligations under this Agreement due to effect of force majeure, such party shall be released from
relevant liabilities, but shall continue to perform after the effect of such force majeure is eliminated. If the force majeure has caused the performance of this Agreement to be impossible or unnecessary, the parties shall friendly negotiate about
other resolutions. 

  

	Article VI	Modification, Termination and Expiration of the Agreement 

  

	6.1	This Agreement may be modified through both parties’ negotiation, or due to force majeure or other events provided by laws and regulations and this Agreement.

  

	6.2	Any modification to this Agreement shall be executed by both parties in writing, otherwise it shall not bind the parties. 

 

	6.3	If any party fails to perform this Agreement within specified term, and the non-performance continues for a grace period of up to thirty days granted by the
non-breaching party, the non-breaching party may terminate this Agreement by notice to the other party. The terminating notice is effective on the date when it is sent. Within the term of this Agreement, Party B may terminate this Agreement by
30-day’s written notice to Party B. 

  

	6.4	During the term of this Agreement, if any party has made bankruptcy application in any form, has entered into bankruptcy liquidation proceedings, has been prohibited
from continuing operation by competent governmental authority, or has lost legal person status or other legal subject status due to other reasons, the other party is entitled to terminate this Agreement. The terminating notice is effective on the
date when it is sent. 

  

	6.5	The termination of this Agreement does not prejudice the other party’s right to seek for compensations. If the modification or termination of this Agreement causes
losses to any party, the responsible parties shall compensate such losses, except for those exempted by relevant laws. If this Agreement is terminated due to reasons attributable to Party A, Party B is entitled to compensations for all losses caused
by such termination, as well as service fees for all services that have been rendered. 

  

	Article VII	Governing Law and Dispute Resolution 

  

	7.1	The execution, effectiveness, interpretation, performance, amendment, termination and dispute resolution of this Agreement shall be governed by the laws of the
People’s Republic of China. 

  

	7.2	If there are any disputes or controversies in the performance of this Agreement, the parties shall first resolve them through friendly negotiation and, if negotiation
fails, such disputes shall be submit to the China International Economic and Trade Arbitration Commission for arbitration in accordance with the then current arbitration rules of such commission. The arbitration shall be held in Beijing.

  
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	Article VIII	Miscellaneous 

  

	8.1	This Agreement becomes effective upon signature of both parties. After this Agreement becomes effective and has been performed, the parties may execute supplementary
agreements with respect to matters not addressed in this Agreement, or new situations occurring during the performance of this Agreement. Such supplementary agreement constitutes an integral part to this Agreement and has the same legal effect with
the Agreement. 

  

	8.2	Provisions regarding confidentiality, dispute resolution and breach liabilities in this Agreement survive the termination or suspension of this Agreement.

  

	8.3	Without prior written consent of the other party, neither party may assign all or any of its rights and duties under this Agreement to any third party.

  

	8.4	The invalidity of any provisions of this Agreement shall not affect the validity of other provisions of this Agreement. 

 

	8.5	This Agreement is executed in two copies, each party holding one copy, and both copies have the same legal effect. 

  
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 [Signature page] 
  

			
	Party A:	  	Duowan Entertainment Information Technology (Beijing) Company Limited (Seal)

  

			
	By:	 	/s/ Xueling Li
	Name:	 	Xueling Li
	Title:	 	Authorized Representative

  

			
	Party B:	  	Beijing Tuda Science and Technology Company Limited (Seal)

  

			
	By:	 	/s/ Jin Cao
	Name:	 	Jin Cao
	Title:	 	Authorized Representative

  
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 Appendix 
 Standards and Payments of Technology Service Fee 
  

	1.	Both parties agree that Party B shall pay services fees to Party A as consideration for the technology support and technology services provided by Party A in accordance
with Section 1.1 of this Agreement according to the following provisions: 

  

	 	(1)	Basic Annual Fees 

 Party
B shall pay to Party A RMB[        ] annually as the basic annual fees for the technology support and technology services provided by Party A in the year under this Agreement, which shall be made by four equal
installments and be paid by quarter. Party B shall, within fifteen (15) business days after the beginning of each quarter, pay RMB[        ] to a bank account designated by Party A. 

 

	 	(2)	Floating Fees 

 In
addition to the basic annual fees provided in the above paragraph (1), Party B shall pay to Party A floating fees based on the specific situation of the provision of technology support and services in each year. The floating fees shall be paid by
quarter, and the amount of such floating fees payable in each quarter shall be determined by both parties considering the following factors: 
  

	 	(i)	The number and qualifications of professional personnel of Party A used to provide supporting services to Party B in the quarter; 

 

	 	(ii)	Time spent by Party A’s professional personnel to provide supporting services in the quarter; 

 

	 	(iii)	Party A’s various investments in providing supporting services in the quarter; 

 

	 	(iv)	Detailed contents and values of the consulting and training services provided by Party A in the quarter; and 

 

	 	(v)	Party B’s business revenue. 

  

	2.	Within 15 days after the end of each quarter, Party B shall provide Party A with all necessary financial materials for calculation of such quarter’s floating fees,
and to pay Party A such floating fees within 30 days after the end of such quarter. If Party A questions the financial materials provided by Party B, it may delegate a reputable independent accountant to conduct an audit of relevant materials. Such
audit shall be conducted during normal business hours and shall not affect Party B’s normal business. Under such conditions, Party B shall provide cooperation. 

  
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	3.	If Party A deems that the agreed amount of service fees provided in the first paragraph of this Appendix cannot accommodate to changes of objective situations
and needs adjustment, Party B shall, within seven business days after Party A gives a written request for adjustment of fees, negotiate with Party A actively and in good faith to determine the new fees schedule or system. 

  
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