[Joint Filing Agreement [Remainder of this page has been left intentionally blank.] VODone Limited Lijun Zhang Director Lijun Zhang Lijun Zhang Dragon Joyce Limited Lijun Zhang Director OWX Holding Co. Ltd. Lijun Zhang] [CUSIP No.: 16952T 100 (1) Name of reporting persons VODone Limited (2) Check the appropriate box if a member of a group ¨ x (a) (3) SEC use only (4) Citizenship or place of organization Bermuda Number of shares beneficially owned by each reporting person with (5) Sole voting power 8,795,864 Class A ordinary shares and 180,821,228 Class B ordinary]

[Joint Filing Agreement [Remainder of this page has been left intentionally blank.] Trilogic Investments Limited Wang Yongchao Director Wang Yongchao Wang Yongchao EX-99.(A) 2 d674935dex99a.htm EX-99.(A)] [CUSIP NO.: 16952T 100 (1) NAME OF REPORTING PERSONS Trilogic Investments Limited (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* ¨ x (a) (3) SEC USE ONLY (4) CITIZENSHIP OR PLACE OF ORGANIZATION British Virgin Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH (5) SOLE VOTING POWER 27,341,554 Class A ordinary shares (6)]