YELLOW SEA SEA TRIAL OF “ZHI FEI” FROM 200100UTC TO 200900UTC JAN IN AREA BOUNDED BY THE LINES JOINING: A.36-20.98N/120-42.97E; B.36-32.45N/120-59.31E; C.36-22.72N/121-12.91E; D.36-11.40N/120-55.40E。 CAUTION ADVISED.