JOINT ANNOUNCEMENT – PROPOSED RIGHTS ISSUE IN THE PROPORTION OF ONE (1) RIGHTS SHARE FOR EVERY TWO (2) CHUANG’S CHINA SHARES HELD ON THE RECORD DATE AT HK$0.28 PER RIGHTS SHARE / DISCLOSEABLE TRANSACTION IN RELATION TO THE SUBSCRIPTION OF RIGHTS SHARES COMPRISING THE FULL ACCEPTANCE OF PROVISIONAL ENTITLEMENT FOR RIGHTS SHARES UNDER THE IRREVOCABLE UNDERTAKING