Document:

EXHIBIT 10.1

AN AMENDMENT AGREEMENT is
made on June 29, 2006

AMONG

(1)                                  SIHITECH COMPANY LIMITED, a company with
limited liability established and existing pursuant to the laws of the British
Virgin Islands (BVI) whose registered office is at TrustNet Chambers, P.O. Box
3444, Road Town, Tortola, British Virgin Islands;

(2)                                  MEGA
CAPITAL GROUP SERVICES LIMITED, a company with limited liability
established and existing pursuant to the laws of the BVI whose registered
office is at TrustNet Chambers, P.O. Box 3444, Road Town, Tortola, British
Virgin Islands;

(3)                                  PROFIT
LOYAL CONSULTANTS LIMITED, a company with limited liability established and
existing pursuant to the laws of the BVI whose registered office is at TrustNet
Chambers, P.O. Box 3444, Road Town, Tortola, British Virgin Islands;

(4)                                  ELITE
CONCORD INTERNATION LIMITED, a company with limited liability established
and existing pursuant to the laws of the BVI whose registered office is at
TrustNet Chambers, P.O. Box 3444, Road Town, Tortola, British Virgin Islands;

(5)                                  CHINA
CENTURY HOLDINGS GROUP LIMITED, a company with limited liability
established and existing pursuant to the laws of the BVI whose registered
office is at TrustNet Chambers, P.O. Box 3444, Road Town, Tortola, British
Virgin Islands;

(6)                                  SHINING
GROUTH INVESTMENT GROUP LIMITED, a company with limited liability
established and existing pursuant to the laws of the BVI whose registered
office is at TrustNet Chambers, P.O. Box 3444, Road Town, Tortola, British
Virgin Islands; and

(7)                                  CHINA UNISTONE ACQUISITION CORP., a company incorporated under the laws of
the State of Delaware of the United States; and

(8)                                  YUCHENG TECHNOLOGIES LIMITED, a wholly owned subsidiary of CUAQ and a
company incorporated under the laws of the BVI whose registered office is at Room 1708,
Dominion Centre 43-59 Queen’s Road East, Wanchai, Hong Kong S.A.R.

(9)                                  CHIH CHEUNG

(10)                            JAMES LI

 

 

(11)                            JAMES PREISSLER

WHEREAS

The Parties have signed
an agreement for sale and purchase of shares of Ahead Billion Venture Limited
and Port Wing Development Company Limited as of December 20, 2005 (the SPA).

IT IS AGREED as follows:

1              The Parties agree that Section 11.1(c) of the
SPA shall be amended to read as follows:

“(c)    by
either CUAQ or the Vendors jointly, if the Closing has not occurred by November 24, 2006 (or such other date as may be
extended from time to time by written agreement of Parties); provided, however,
that the right to terminate this Agreement under this Section 11.1(c) shall
not be available to any Party that is then in breach of any of its covenants,
representations or warranties in this Agreement;”

2              The
Parties agree that except as amended hereby, the provisions of the SPA are confirmed and shall remain unchanged and shall continue in full
force and effect.

 

 2
 

 

 

IN WITNESS WHEREOF, the
Parties have caused this Agreement to be executed as of the date first written
above.

	
  For and on behalf of

  	
   

  	
  For and on behalf of

  
	
  Sihitech
  Company Limited

  	
   

  	
  Elite Concord International Limited

  
	
   

  	
   

  	
   

  
	
  By:

  	
  /s/ HONG WEIDONG

  	
   

  	
   

  	
  By:

  	
  /s/ ZENG SHUO

  	
   

  
	
  Name: HONG
  Weidong

  	
   

  	
  Name: ZENG Shuo

  
	
  Title:
  Authorized Representative

  	
   

  	
  Title: Authorized Representative

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  For and on
  behalf of

  	
   

  	
  For and on behalf of

  
	
  Mega
  Capital Group Services Limited

  	
   

  	
  China Century Holdings Group Limited

  
	
   

  	
   

  	
   

  
	
  By:

  	
  /s/ WANG YANMEI

  	
   

  	
   

  	
  By:

  	
  /s/ ZHONG
  MINGCHANG

  	
   

  
	
  Name: WANG
  Yanmei

  	
   

  	
  Name: ZHONG Mingchang

  
	
  Title:
  Authorized Representative

  	
   

  	
  Title: Authorized Representative

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  For and on
  behalf of

  	
   

  	
  For and on behalf of

  
	
  Profit
  Loyal Consultants Limited

  	
   

  	
  Shinning Growth Investment Group Limited

  
	
   

  	
   

  	
   

  
	
  By:

  	
  /s/ MA GEHUA

  	
   

  	
   

  	
  By:

  	
  /s/ WANG YI

  	
   

  
	
  Name: MA Gehua

  	
   

  	
  Name: WANG Yi

  
	
  Title:
  Authorized Representative

  	
   

  	
  Title: Authorized Representative

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  For and on
  behalf of

  	
   

  	
  For and on behalf of

  
	
  China
  Unistone Acquisition Corp.

  	
   

  	
  Yucheng Technologies Limited

  
	
   

  	
   

  	
   

  
	
  By:/s/ CHIH CHEUNG

  	
   

  	
  By:

  	
  /s/ CHIH
  CHEUNG

  	
   

  
	
  Name: Chih
  Cheung

  	
   

  	
  Name: Chih Cheung

  
	
  Title: Chairman

  	
   

  	
  Title: Director

  
	
   

  	
   

  	
   

  
	
  /s/ CHIH CHEUNG

  	
   

  	
   

  	
   

  	
  /s/ JAMES LI

  	
   

  	
   

  
	
  Chih Cheung

  	
   

  	
  James Li

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  /s/ James
  Preissler

  	
   

  	
   

  	
   

  	
   

  
	
  James Preissler

  	
   

  	
   

  
													

 

 3EXHIBIT 10.2

AN AMENDMENT AGREEMENT is
made on June 29, 2006

AMONG

(1)                                  BEIJING XINYUAN TIANYU TECHNOLOGIES CO., LTD. (北京信源天宇科技有限公司),
with limited liability established and existing pursuant to the laws of the PRC
whose registered office is at Room 312, Shunpinda Bus Terminal, 8
Chuangxin Road, Beijing Changping Technology Park, Beijing, PRC;

(2)                                  BEIJING ZHANHENG JIYUAN SOFTWARE TECHNOLOGIES CO., LTD. (北京展恒纪元软件技术有限公司),
with limited liability established and existing pursuant to the laws of the PRC
whose registered office is at Room 305, Shunpinda Bus Terminal, 8
Chuangxin Road, Beijing Changping Technology Park, Beijing, PRC;

(3)                                  BEIJING SIHITECH CO., LTD. (北京宇信鸿泰科技发展有限公司),
a company with limited liability established and existing pursuant to the laws
of the PRC whose registered office is at 3rd Floor, Tower B, Beijing Financial
Trust Building, 5 Anding Road, Chaoyang District, Beijing, 100029, PRC;

(4)                                  AHEAD BILLION VENTURE LIMITED, a company incorporated under the laws of
the British Virgin Islands whose registered office is at TrustNet Chambers, P.O. Box 3444, Road
Town, Tortola, British Virgin Islands; and

(5)                                  INDIVIDUAL SHAREHOLDERS listed in Appendix A.

WHEREAS

The Parties have signed
an agreement for sale and purchase
of equity interest of Beijing Sihitech Co., Ltd. as of December 20, 2005
(the Sihitech SPA).

IT IS AGREED as follows:

1              The Parties agree that Section 11.1(c) of the
Sihitech SPA shall be amended to read as follows:

“(c)                  by
either the Purchaser or the Vendors, if the Closing or the closing for the
acquisition of e-Channels by e-Channels BVI has not occurred by November 24, 2006 (or such other date as may be
extended from time to time by written agreement of the Purchaser and Vendors);
provided, however, that the right to

 

 

 

                                                terminate
this Agreement under this Section 11.1(c) shall not be available to
any Party that is then in breach of any of its covenants, representations or
warranties in this Agreement;”

2              The
Parties agree that except as amended hereby, the provisions of the SPA are confirmed and shall remain unchanged and shall continue in full
force and effect.

IN WITNESS WHEREOF,
the Parties have caused this Agreement to be executed as of the date first
written above.

 

	
  BEIJING ZHANHENG JIYUAN

  SOFTWARE TECHNOLOGIES CO.,

  LTD.

  	
  AHEAD BILLION VENTURE

  LIMITED

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ HONG Weidong

  	
   

  	
  By:

  	
  /s/ HONG Weidong

  	
   

  
	
  Name: HONG
  Weidong

  	
  Name: HONG Weidong

  
	
  Title:

  	
  Title:

  
	
   

  	
   

  
	
   

  	
   

  
	
  BEIJING
  XINYUAN TIANYU

  TECHNOLOGIES CO., LTD.

  	
  INDIVIDUAL SHAREHOLDERS

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ HONG Weidong

  	
   

  	
  By:

  	
  /s/ HONG Weidong

  	
   

  
	
  Name: HONG
  Weidong

  	
  Name: HONG Weidong

  
	
  Title:

  	
  Authorized Representative

  
	
   

  	
   

  
	
   

  	
   

  
	
  BEIJING
  SIHITECH CO., LTD.

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ HONG Weidong

  	
   

  	
   

  
	
  Name: HONG
  Weidong

  	
   

  
	
  Title:

  	
   

  
	
   

  	
   

  

 

 2
 

 

 

APPENDIX
A

INDIVIDUAL
SHAREHOLDERS

	
  Shareholders’ Name

  	
   

  	
  Contribution in Registered Capital 

  (RMB million)

  
	
  Hong Weidong

  	
   

  	
  9.5 (47.5%)

  
	
  Wu Hong

  	
   

  	
  3.6 (18%)

  
	
  Wang Yanmei

  	
   

  	
  0.9 (4.5%)

  
	
  Liu Xin

  	
   

  	
  0.5 (2.5%)

  
	
  Fan Qinghua

  	
   

  	
  0.8 (4%)

  
	
  Zheng Chun

  	
   

  	
  0.6 (3%)

  
	
  Li Yuan

  	
   

  	
  0.4 (2%)

  
	
  Li Shixin

  	
   

  	
  0.4 (2%)

  
	
  Zhao Yiyong

  	
   

  	
  0.3 (1.5%)

  
	
  Li Feng

  	
   

  	
  0.2 (1%)

  
	
  Liu Wei

  	
   

  	
  0.2 (1%)

  
	
  Ma Gehua

  	
   

  	
  1 (5%)

  
	
  He Changqing

  	
   

  	
  0.6 (3%)

  
	
  Su Yong

  	
   

  	
  1 (5%)

  

 

 

 3EXHIBIT 10.3

AN AMENDMENT AGREEMENT is
made on June 29, 2006

AMONG

(1)                                  BEIJING E-CHANNELS COORDINATION TECHNOLOGY CO., LTD. (北京易诚互动科技有限公司),
with limited liability established and existing pursuant to the laws of the PRC
whose registered office is at Room 205, Shunpinda Bus Terminal, 8
Chuangxin Road, Beijing Changping Technology Park, Beijing, PRC;

(2)                                  BEIJING E-CHANNELS CENTURY TECHNOLOGY CO., LTD. (北京易诚世纪科技发展有限公司),
a company with limited liability established and existing pursuant to the laws
of the PRC whose registered office is at Middle District 4F, De Shi Building,
No.9 Shang Di East Road, Beijing, the PRC;

(3)                                  PORT WING DEVELOPMENT COMPANY LIMITED, a company incorporated under the laws of
the British Virgin Islands whose registered office is at TrustNet Chambers, P.O. Box 3444, Road
Town, Tortola, British Virgin Islands; and

(4)                                  INDIVIDUAL SHAREHOLDERS listed in Appendix A.

WHEREAS

The Parties have signed
an agreement for sale and purchase
of equity interest of Beijing E-Channels Century Technology Co., Ltd. as of December 20,
2005 (the E-Channels SPA).

IT IS
AGREED as follows:

1              The Parties agree that Section 11.1(c) of the
E-channels SPA shall be amended to read as follows:

“(c)                  by
either the Purchaser or the Vendor, if the Closing or the closing for the
acquisition of e-Channels by e-Channels BVI has not occurred by November 24, 2006 (or such other date as may be
extended from time to time by written agreement of the Purchaser and Vendor);
provided, however, that the right to terminate this Agreement under this Section 11.1(c) shall
not be available to any Party that is then in breach of any of its covenants,
representations or warranties in this Agreement;”

 

 

2              The
Parties agree that except as amended hereby, the provisions of the SPA are confirmed and shall remain unchanged and shall continue in full force and effect.

IN
WITNESS WHEREOF, the Parties have caused this Agreement to be
executed as of the date first written above.

	
  BEIJING E-CHANNELS

  	
   

  	
  PORT WING VENTURE

  
	
  COORDINATION
  TECHNOLOGY CO., LTD.

  	
   

  	
  COMPANY LIMITED

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  By:

  	
  /s/ ZENG Shuo

  	
   

  	
   

  	
  By:

  	
  /s/ ZENG Shuo

  	
   

  
	
  Name:  ZENG
  Shuo

  	
   

  	
  Name: ZENG Shuo

  
	
  Title:

  	
   

  	
  Title:

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  BEIJING
  E-CHANNELS CENTURY

  	
   

  	
  INDIVIDUAL SHAREHOLDERS

  
	
  TECHNOLOGY
  CO., LTD.

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  By:

  	
  /s/ ZENG Shuo

  	
   

  	
   

  	
  By:

  	
  /s/ ZENG Shuo

  	
   

  
	
  Name: ZENG
  Shuo

  	
   

  	
  Name: ZENG
  Shuo

  
	
  Title:

  	
   

  	
  Authorized Representative

  
	
   

  	
   

  	
   

  
								

 

 2
 

 

 

APPENDIX
A

INDIVIDUAL
SHAREHOLDERS

	
  Shareholders

  	
   

  	
  Equity Ratio

  	
   

  	
  Shareholders

  	
   

  	
  Equity Ratio

  
	
  ZENG, Shuo

  	
   

  	
  43.1208%

  	
   

  	
  ZHANG,Jiawei

  	
   

  	
  1.1914%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  ZHONG, Mingchang

  	
   

  	
  8.9354%

  	
   

  	
  CAI,Jun

  	
   

  	
  0.2500%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  WANG,Yi

  	
   

  	
  8.9354%

  	
   

  	
  DING,Yongtao

  	
   

  	
  1.4892%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  ZHANG,Yan

  	
   

  	
  2.9785%

  	
   

  	
  HONG,Shenping

  	
   

  	
  6.2500%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  ZHANG,Dongyun

  	
   

  	
  2.9785%

  	
   

  	
  LI,Xiaolong

  	
   

  	
  2.5000%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  JIN, Zhiwei

  	
   

  	
  2.9785%

  	
   

  	
  CHEN,Hua

  	
   

  	
  0.5000%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  XU,Guanglin

  	
   

  	
  2.9785%

  	
   

  	
  YANG,Guangrun

  	
   

  	
  0.5000%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  FANG,Yong

  	
   

  	
  2.9785%

  	
   

  	
  LIANG,Qiang

  	
   

  	
  0.5000%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  QIAN,Jianbo

  	
   

  	
  2.9785%

  	
   

  	
  WANG,Dong

  	
   

  	
  0.5000%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  PENG,Jizhou

  	
   

  	
  2.9785%

  	
   

  	
  MIN,Gang

  	
   

  	
  0.5000%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  ZHANG,Rui

  	
   

  	
  1.4892%

  	
   

  	
  HAN,Dong

  	
   

  	
  0.5000%

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  CHANG,Hongxia

  	
   

  	
  1.4892%

  	
   

  	
  XU,Yan

  	
   

  	
  0.5000%

  

 

 

 3

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