GD0053 SOUTH CHINA SEA GUN FIRING EXERCISES IN AREA BOUNDED BY 23-18-00N 117-02-00E，23-18-00N 117-09-00E，23-13-30N 117-09-00E AND 23-13-30N 117-02-00E 0100UTC TO 1000UTC DAILY FROM 21 TO 22 MAR. ENTERING PROHIBITED SHANTOU MSA CHINA
