[Execution Version AMENDED AND RESTATED CONSORTIUM AGREEMENT Agreement Chairwoman Valuetrue Investments Founder Grow Grand Founder Parties Sequoia Yiheng Sponsors Sponsor Consortium Member Consortium THIS AMENDED AND RESTATED CONSORTIUM AGREEMENT, dated March 18, 2014 (this “ Original Consortium Agreement Transaction Target Exchange Act WHEREAS, the Founder Parties and Sequoia have previously entered into a Consortium Agreement dated May 21, 2013 (the] [CUSIP No. 521168 104 Page 2 of 16 1 Name of reporting person SEQUOIA CAPITAL CHINA I, L.P. (“SCC I”) IRS Identification No. 20-3514012 2 Check the appropriate box if a member of a group ¨ x (a) 3 SEC use only 4 Source of funds OO (See Item 3)]

[Execution Version AMENDED AND RESTATED CONSORTIUM AGREEMENT Agreement Chairwoman Valuetrue Investments Founder Grow Grand Founder Parties Sequoia Yiheng Sponsors Sponsor Consortium Member Consortium THIS AMENDED AND RESTATED CONSORTIUM AGREEMENT, dated March 18, 2014 (this “ Original Consortium Agreement Transaction Target Exchange Act WHEREAS, the Founder Parties and Sequoia have previously entered into a Consortium Agreement dated May 21, 2013 (the] [CUSIP No. 1 NAME OF REPORTING PERSON YIHENG CAPITAL PARTNERS LP (“Yiheng I”) 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ¨ x (a) 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 ¨]

[AMENDED AND RESTATED CONSORTIUM AGREEMENT Agreement Chairwoman Valuetrue Investments Founder Grow Grand Founder Parties Sequoia Yiheng Sponsors Sponsor Consortium Member Consortium THIS AMENDED AND RESTATED CONSORTIUM AGREEMENT, dated March 18, 2014 (this “ Original Consortium Agreement Transaction Target Exchange Act WHEREAS, the Founder Parties and Sequoia have previously entered into a Consortium Agreement dated May 21, 2013 (the “ Proposal] [x If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D/A, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Note]