[SCHEDULE 13G/A (Amendment No. 1)* Cheetah Mobile Inc. (Name of Issuer) Class A ordinary shares, in the form of American Depositary Shares (Title of Class of Securities) 163075104 (CUSIP Number) December 31, 2015 (Date of Event Which Requires Filing of this Statement) x Rule 13d-1(b) o Rule 13d-1(c) o Rule 13d-1(d) *The remainder of this cover page shall be filled]

[Joint Filing Agreement [Remainder of this page has been left intentionally blank.] Sheng Fu Sheng Fu Sheng Global Limited Sheng Fu Director] [1 This is the CUSIP number for the American depositary shares, each representing ten Class A ordinary shares of the Issuer. CUSIP No. 163075 104 Page 2 of 8 Pages 1 Name of Reporting Person]

[JOINT FILING AGREEMENT Dated: February 5, 2016 ATRIX ARTNERS HINA M Yibo Shao Director ATRIX ARTNERS HINA M Yibo Shao Director ATRIX HINA ANAGEMENT M Yibo Shao Director ATRIX HINA TD M Yibo Shao Director IBO HAO Y EX-99.I 2 d133881dex99i.htm EX-I] [CUSIP No. 163075 10 4 1. Names of Reporting Persons Matrix Partners China I, L.P. 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 Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power 0 6. Shared]

[* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed]

[Schedule 13G Forms CUSIP NO. 163075104 13G 2 Page 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) GIC Private Limited (None ) 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* ¨ x (a) 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION Singapore NUMBER OF SHARES BENEFICIALLY OWNED BY]