just watched that Chang Cheh movie finally after over 30 years, and I found some credits/ID'd mixed up.
https://hkmdb.com/db/movies/image_detai ... ay_set=eng (Wang Xiang-Wei/Wong Heung-Wai as second ninja)
But he is NOT listed in our cast - only a Yuk Heung-Wai as second Ninja, who is not tagged of course and unknown still
https://hkmdb.com/db/movies/image_detai ... ay_set=eng (Chan Yee-Gong as Mr. Tanaka)
the real Chan Yee-Gong https://hkmdb.com/db/movies/image_detai ... ay_set=eng is tagged with Chui Siu-Kin
But in our cast Tanaka (田中) is played by a Hao Peng-Shou and that name is shown in that picture:
https://hkmdb.com/db/movies/image_detai ... ay_set=eng

I got headache and did not check all the other credits

Corrected. Good find.

The credit images are very helpful.