Came across that movie and realized that the male leading actor (and his female partner) both not in cast-list yet.
http://hkmdb.com/db/movies/view.mhtml?i ... ay_set=eng
After studying the Poster I realized the Chinese Name and with the help of KMDB verified the Identity of Him.
(added 3 crew credits, Korean title, cropped 3 portraits and ID of Mrs. Choi Chong-Min.

having done this I had pity on the lead actor only having that single entry and therefore added his second lead role movie
Jailhouse (1975) http://hkmdb.com/db/movies/view.mhtml?i ... ay_set=eng
Thus managed to make ID on actress Kim Ok-Jin too.