HKFA has 2-4 under one name plus (1a)
1. Baak Waai-Ching / (???)
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
2. Pai Huai-Chen / (???(1)) hkfa
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
3. Pai Huai-Chen (2) / (???(2)) hkfa
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
4. Pai Huai-Chen (3) / (???(3)) hkfa
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
???
Baak Waai-Ching
Aliases: Pai Huai-Chen
Filmography (1971-1976)
Lighting (4 films)
Cruel Killer (1971)
One-Armed Boxer (1972)
Blood Revenge (1974)
One-armed Boxer vs. the Flying Guillotine (1976) hkfa (1a)
====================
???(1)
Pai Huai-Chen ?
Aliases: Bai Huai-Cheng
Filmography (1969-1977)
Actor (4 films)
Thank You, My Dear Manager (1969)
X + Y = Love (1971)
The Iron Monkey (1977)
The Eight Masters (1977
================================
???(2)
Pai Huai-Chen
Aliases: Bak Wai-Ching (3)
Filmography (1980-1982)
Production Manager (3 films)
Fight for Glory (1980)
The Sword of Justice (1980)
Game of Killers (1982)
======================================
???(3)
Pai Huai-Chen (3)
Aliases: Pak Wai-Ching (3)
Filmography (1966-1976)
Lighting (5 films)
Woman Island Spy Battle (1966)
Eight Robbers (1968)
The Cannibals (1972)
Beach of the War Gods (1973)
One-armed Boxer vs. the Flying Guillotine (1976)
============================
At least #1 and #4 are the same, INOO