The Bird People in China (1998)

A young Japanese salaryman is sent by his company to a remote Chinese village to evaluate precious Jade that is found there but before he arrives he meets up with yakuza who was sent to tail him to protect his boss's interest in the company. When the men finally arrive their mission becomes sidetracked by their interest in a mysterious young village girl, her haunting English language song and the secret that makes men fly like birds.