[TABLE OF CONTENTS CUSIP No. 16950M107 Page 2 of 14 1 NAMES OF REPORTING PERSONS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)]

[Joint Filing Agreement Consolidated Capital Holdings Ltd. Song Wang Song Wang Jean Xiaohong Kou Jean Xiaohong Kou EX-99.1 2 a11-5783_3ex99d1.htm EX-99.1] [1 Names of Reporting Persons]

[Joint Filing Agreement Qiming Corporate GP, Ltd. Qiming GP, L.P. Qiming Venture Partners, L.P.] [1 Names of Reporting Persons 2]

[CUSIP No. 16950M107 1.]

[Joint Filing Agreement Investor AB Investor Investments Asia Limited] [1 Names of Reporting Persons 2]