Route Planes do not fly directly across the straight A plane from Taipei bound for Shanghai for example first fly westsouthwestward to the south of Ishigaki It then fly anit clockwise around the Yaemyama Islands then westward through the strait between Yaeyama and Okinawa honto into the East China Sea For southern cities on the PRC mainland e g Shenzhen and Guangzhou planes have to fly through the Hong Kong FIR Hong Kong s SCMP had a story months ago about the detour round the Yaeyamas