[Item 1: Reporting Person - FMR LLC Item 4: Delaware Item 5: 1,502,850 Item 6: 0 Item 7: 2,753,400 Item 8: 0 Item 9: 2,753,400 Item 11: 5.226% Item 12: HC Cusip #74734M927 Item 1: Reporting Person - Edward C. Johnson 3d Item 5: 0 Item 6: 0 Item 7: 2,753,400 Item 8: 0 Item 9: 2,753,400 Item 11: 5.226%]

[Joint Filing Agreement [Remainder of this page has been left intentionally blank.] Hongyi Zhou Hongyi Zhou Global Village Associates Limited Huan Hu Director Fair Point International Limited Hongyi Zhou Director] [CUSIP No.: 74734M109 (1) Name of Reporting Persons]

[Joint Filing Agreement [Remainder of this page has been left intentionally blank.] Shu Cao Shu Cao Shu Cao Sino Honor Limited Shu Cao Director] [CUSIP No.: 74734M109 (1) Name of Reporting Persons]

[Joint Filing Agreement [Remainder of this page has been left intentionally blank.] Xiangdong Qi Xiangdong Qi Xiangdong Qi East Line Holdings Limited Xiangdong Qi Xiangdong Qi Director Young Vision Group Limited Xiangdong Qi Xiangdong Qi Director] [CUSIP No.: 74734M109 (1) Name of Reporting Persons]

[Joint Filing Agreement Dated: February 13, 2012 TRUSTBRIDGE PARTNERS III, L.P. Shujun Li Authorized Representative TB PARTNERS GP3, L.P. Shujun Li Authorized Representative TB PARTNERS GP LIMITED Shujun Li Authorized Representative TB ALTERNATIVE ASSETS LTD. Shujun Li Authorized Representative EX-99.(A) 2 d301539dex99a.htm JOINT FILING AGREEMENT] [SCHEDULE 13G CUSIP No. 74734M109 Page 2 of 9 Pages 1 NAMES OF REPORTING PERSONS/I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Trustbridge Partners III, L.P. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ¨ x (a) 3 SEC USE ONLY]

[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]