WBAI [500.com] SC 13D/A: JOINT FILING AGREEMENT Dated: July 1, 2015 SEQUOIA
[JOINT FILING AGREEMENT Dated: July 1, 2015 SEQUOIA CAPITAL 2010 CGF HOLDCO, LTD. SEQUOIA CAPITAL CHINA GROWTH 2010 FUND, L.P. A Cayman Islands exempted limited partnership, Its General Partner A Cayman Islands limited liability company Its General Partner SC CHINA GROWTH 2010 MANAGEMENT, L.P. A Cayman Islands limited liability company Its General Partner SC CHINA HOLDING LIMITED SNP CHINA ENTERPRISES] [2 10 Page CUSIP No. 33829R100 SCHEDULE 13D 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Sequoia Capital 2010 CGF Holdco, Ltd. IRS Identification No. 98-0660289 2. Check the Appropriate Box if a Member of a Group (See Instructions) ¨ ¨ (a) 3. SEC Use Only]