John Chiang is a Hong Kong

Hong Kong

Hong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...

 actor. His Chinese name is Chiang Da-wei . He is sometimes credited as David Chiang.
Chiang's mother Hung-wei and father Yim-dut were very popular movie stars. He began his acting career at a very early age, appearing in black and white films when he was only four years old. His real English name is John; David is a stage name given to him by film director Chang Cheh

Chang Cheh

Chang Cheh was Shaw Brothers Studio's best known and most prolific film director, with such films as the Five Venoms, the Brave Archer , the The One-Armed Swordsman, and other classics of wuxia and kung fu film.-Career:Referred to as "The Godfather of Hong Kong cinema", Chang Cheh directed over 100...

 (his Chinese name also sounds like "David").