How many movies have Ching Kuo-Chung and Phillip Ko collaborated on?

They have worked on 4 movies together! Their first movie together was Fighting Of Shaolin Monks (1976) while their highest rated movie together was The Invincible Armour (1977). They have not worked together since Dragon of the Swords Man (1978). They are most known for their action films together.

Role
Chiang's bodyguard
Role
'Genious Scholar' Wang Li
Role
Servant at brothel
Role
Three Scar Chief (as Kao Fei)