Chow Yun-Fat was 19 in The Reincarnation when he played an uncredited character.
That was over 48 years ago in 1976.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 68, and has starred in 115 movies in total, 112 of those since The Reincarnation was released.
In The Reincarnation, I think Chow Yun-Fat looks: