GD156/21 SOUTH CHINA SEA GUNNERY DRILL IN AREA BOUNDED BY 21-06N 111-12E，21-01N 111-12E，21-01N 111-02E AND 21-06N 111-02E 0000 UTC TO 1000 UTC DAILY FROM 26 TO 28 JUL. ENTERING PROHIBITED GUANGDONG MSA CHINA
