EX-4.55



 Exhibit 4.55 
 (English Translation) 
 Supplementary Agreement 

This Supplementary Agreement (the “Agreement”) is entered into by and among the following parties in Beijing on
September 6, 2011: 
  

			
	 Party A:
	  	Baidu Online Network Technology (Beijing) Co., Ltd. (“Baidu Online”)
		
	 Address:
	  	3/F, Baidu Campus, No. 10 Shangdi 10th Street, Haidian District, Beijing 100085, The People’s Republic of China
		
	 Party B:
	  	Beijing Perusal Technology Co., Ltd. (“Beijing Perusal”)
		
	 Address:
	  	2/F, No.17 Building, Zhongguancun Software Park, No.8 Northeast Wangxi Road, Haidian District, Beijing
		
	 Party C:
	  	Jiping Liu
		
	 Party D:
	  	Yazhu Zhang

 In this Agreement, the parties are referred to as a “Party” individually and
“Parties” collectively. 
 Whereas: 
 1. The Parties to the Agreement individually or jointly signed the following agreements/contracts or powers of attorney: 
  

							
	No.	  	Document Names	  	Signing Parties	  	Signing Dates
	1	  	Technology Consulting and Services Agreement	  	Baidu Online, Beijing Perusal	  	June 23, 2006
	2	  	Operating Agreement	  	Baidu Online, Beijing Perusal, Jiping Liu, Yazhu Zhang	  	June 23, 2006
	3	  	Exclusive Equity Purchase Option Agreement	  	Baidu Online, Jiping Liu	  	May 19, 2006
	4	  	Exclusive Equity Purchase Option Agreement	  	Baidu Online, Yazhu Zhang	  	May 19, 2006
	5	  	Proxy Agreement	  	Jiping Liu, Yazhu Zhang, Baidu Online	  	May 17, 2008
	6	  	Irrevocable Power of Attorney	  	Jiping Liu	  	June 23, 2006
	7	  	Irrevocable Power of Attorney	  	Yazhu Zhang	  	June 23, 2006

 2. The Parties agree to enter into this Agreement to amend certain sections in the agreements/contracts
or powers of attorney set out above. 
 NOW THEREFORE, The Parties hereby agree as follows: 

1. The amended sections: 
 1.1 Technology
Consulting and Services Agreement: 

  
 1 








 1.1.1 Section 7.2 is amended as: “7.2 The term of this Agreement shall be permanent, unless
otherwise provided herein.” 
 1.1.2 Section 7.3 is amended as: “7.3 If the duration of operation of either party is expired within
the term of this Agreement, such party shall renew the duration of operation in time so as to ensure the effectiveness and performance of this Agreement. If the renewal of the duration of operation is not approved or agreed by the competent
authorities, the Agreement shall be terminated upon the expiration of such party’s duration of operation.” 
 1.1.3 Section 7.4
is deleted. 
 1.1.4 Section 8.1 is amended as: “8.1 [Blank]”. 
 1.2 Operating Agreement: 
 1.2.1 Section 15 is amended as: “15 The term of this Agreement
shall be permanent, unless otherwise provided herein. If the duration of operation of either party is expired within the term of this Agreement, such party shall renew the duration of operation in time so as to ensure the effectiveness and
performance of this Agreement. If the renewal of the duration of operation is not approved or agreed by the competent authorities, the Agreement shall be terminated upon the expiration of such party’s duration of operation.” 

1.2.2 Section 16 is amended as: “16 During the term of this Agreement, Party B shall not terminate this Agreement, unless Party A has a gross
negligence or fraud towards Party B. Notwithstanding the above stipulation, Party A shall have the right to terminate this Agreement at any time by issuing a thirty (30) days’ prior written notice to Party B.” 

1.3 Exclusive Equity Purchase Option Agreement with Jiping Liu 
 1.3.1 Secion 5.2 is amended as: “Section 5.2 This Agreement shall be effective as of the date first set forth above, and terminated when all the shares held by Party B have been transferred to Party
A and/or the Designated Persons pursuant to this Agreement.” 
 1.4 Exclusive Equity Purchase Option Agreement with Yazhu Zhang 

1.4.1 Secion 5.2 is amended as: “Section 5.2 This Agreement shall be effective as of the date first set forth above, and terminated when all the
shares held by Party B have been transferred to Party A and/or the Designated Persons pursuant to this Agreement.” 
 1.5 Proxy Agreement

 1.5.1 Section 9 is amended as: “9. The term of this Agreement shall be permanent, unless the Company terminates this Agreement in
writing.” 
 1.6 Irrevocable Power of Attorney issued by Jiping Liu 
 1.6.1 The last paragraph is amended as: “During the period that I am a shareholder of Beijing Perusal, this Power of Attorney is irrevocable and permanently effective from the date of this Power of
Attorney, unless otherwise provided herein.” 

  
 2 








 1.7 Irrevocable Power of Attorney issued by Yazhu Zhang 

1.7.1 The last paragraph is amended as: “During the period that I am a shareholder of Beijing Perusal, this Power of Attorney is irrevocable and
permanently effective from the date of this Power of Attorney, unless otherwise provided herein.” 
 2. Miscellaneous 

2.1 The Effective Date 
 This
Agreement shall be effective as of the date first set forth above. 
 2.2 The Applicable Laws 

The conclusion, effectiveness, interpretation, performance, amendment, termination and dispute settlement shall be governed by PRC laws
officially published and publicly available. 
 2.3 Language 
 This Agreement is executed in Chinese in four originals, each Party holding an original. All the originals shall have the same legal effect. 

IN WITNESS WHEREOF, each party hereto have caused this Agreement to be duly executed by its legal representative on its behalf as
of the date first set forth above. 
  

			
	 Party A: Baidu Online Network Technology (Beijing) Co., Ltd.
	  	Party B: Beijing Perusal Technology Co., Ltd.
	 Legal Representative: /s/ Zhan Wang (with

the company seal of Baidu Online Network

Technology (Beijing) Co., Ltd.)
	  	 Legal Representative: /s/ Zhan Wang (with the company seal of Beijing Perusal

Technology Co., Ltd.)

	 Party C: Jiping Liu
	  	Party D: Yazhu Zhang
	 Signature: /s/ Jiping Liu
	  	/s/ Yazhu Zhang


  
 3