JOINT ANNOUNCEMENT (1) COMPLETION OF DISPOSAL AGREEMENT AND SALE AND PURCHASE AGREEMENTS; (2) UNCONDITIONAL MANDATORY CASH OFFERS BY OPTIMA CAPITAL LIMITED FOR AND ON BEHALF OF OFFEROR TO ACQUIRE ALL ISSUED SHARES IN HKRH (OTHER THAN THOSE ALREADY OWNED OR AGREED TO BE ACQUIRED BY OFFEROR AND PARTIES ACTING IN CONCERT WITH IT) AND CANCEL ALL OUTSTANDING OPTIONS OF HKRH; (3) APPOINTMENT OF DIRECTORS IN HKRH; AND (4) CLARIFICATION OF LAST UPDATE ANNOUNCEMENT