GD71/22 SOUTH CHINA SEA MILITARY EXERCISES IN AREA BOUNDED BY 20-15-44N 109-55-08E，20-11-04N 109-55-09E，20-10-45N 109-52-18E AND 21-12-18N 109-50-33E 2300 UTC TO 0600 UTC AND 1100 UTC TO 1500 UTC DAILY FROM 28 TO 30 JUL. ENTERING PROHIBITED GUANGDONG MSA CHINA