GD21/22 BEIBU BAY MILITARY EXERCISES IN AREA BOUNDED BY 21-16-07N 109-46-12E，21-11-47N 109-46-19E，21-11-36N 109-39-23E AND 21-15-56N 109-39-15E FROM 16 TO 19 MAR. ENTERING PROHIBITED GUANGDONG MSA CHINA
