[CUSIP No. 15911M107 1. Names of Reporting Persons Sohu.com (Game) Ltd. 2. Check the Appropriate Box if a Member of a Group (See Instructions) ¨ x (a) 3. SEC Use Only 4. Citizenship or Place of Organization Cayman Islands]
[00211V106 CUSIP No. 2 9 Page 1 NAMES OF REPORTING PERSONS Kevin Xiaofeng Ma]
[CUSIPNo. 15911M107 1. Names of Reporting Persons STYLE="font-family:Times New Roman" SIZE="3">Prominence Investments 2. Check the Appropriate Box if a Member of a (See Instructions) (a) 3. SEC Use Only 4. Citizenship or Place of Organization British Virgin Islands Numberof Shares Beneficially Ownedby Each Reporting Person With 5. Sole Voting Power]
[CUSIP No. 15911M107 1. Names of Reporting Persons Sohu.com (Game) Ltd. 2. Check the Appropriate Box if a Member of a Group (See Instructions) ¨ x (a) 3. SEC Use Only 4. Citizenship or Place of Organization Cayman Islands]
[Joint Filing Agreement [Remainder of this page has been left intentionally blank.] CDH Net Technology Limited CDH China Growth Capital Fund II, L.P. CDH China Growth Capital Holdings Company Limited, its general partner] [CUSIP No.: 74734M109 (1) Name of Reporting Persons]
[CUSIP NO. 827084864 13G Page 2 of 13]
[Dated: February 10, 2012 Columbia Wanger Asset Management, LLC Bruce H. Lauer Chief Operating Officer Columbia Acorn Trust Bruce H. Lauer Vice President, Treasurer and Secretary EX-99.1 2 d296949dex991.htm JOINT FILING AGREEMENT] [1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY): Columbia Wanger Asset Management, LLC 04-3519872 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) ¨ ¨ (a) 3]
