ID of that 3 actors:

1. Guo Chang-Ru:

http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng

Merged that 2 names:

???
Kwok Cheong-Kiu
Actor (6 films)
My Blade, My Life (1978)
The Dream Sword (1979)
The Idiot Swordsman (1979)
The Thrilling Sword (1981)
The Stunning Gambling (1982)
The Girl Robber and I (1982)

and

???
Guo Chang-Ru
Aliases: Gwok Cheong-Yue
Actor (9 films)
The Big Fellow (1973)
My Blade, My Life (1978)
The Dream Sword (1979)
Prodigal's Tears (1980)
Joyful Group (1980)
The Tragic Explosion (1980)
Kidnapped (1983)
A Brighter Summer Day (1991) ... Key grip
Empress Wu (1999) ... Zhangsun Wuji


2. Hu Hsiang-Ping (1):

http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng


3. Kwok Gwan:

http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
_______________________________________________________________________________________

Not sure if it is Hu Hsiang-Ping (1) or Tung Kei (ID a few month ago) or someone else:

http://hkmdb.com/db/movies/image_detail ... ay_set=eng

and

http://hkmdb.com/db/movies/image_detail ... ay_set=eng

and

http://hkmdb.com/db/movies/image_detail ... ay_set=eng
___________________________________

Added 2 images to SPRING GAME with Hu Hsiang-Ping (2) in the credits who could be also Hu Hsiang-Ping (1):

http://hkmdb.com/db/movies/images.mhtml ... ay_set=eng

The first one COULD BE Hu (1), but not sure.

Maybe more Hu Hsiang-Ping (1) IDs later if I have time to check more movies.

Added more images/movies to Woo Cheung-Ping:

http://hkmdb.com/db/people/images.mhtml ... ay_set=eng

Added one more image to Guo Chang-Ru:

http://hkmdb.com/db/movies/image_detail ... ay_set=eng