I think it must have been Chang then.
3 seconds sound clip from the Kung Fu Of 8 Drunkards movie soundboard.
You can hear this line at 01:12:35.679 in the Blu-ray version of the movie.
Quote context
[...]
- Chang? I don't know. I haven't seen him for ages, I tell ya.
- Really, I haven't seen him. I don't...
- Where is he? I can't see him.
- Ohh!
- I got a stomach ache. I wanna, I gotta...
- I think it must have been Chang then.
- Now tell me, where's my uncle?
- What have you done with him?
- I'll talk. I'll talk. He... He... He's at the waterfall.
- You'll never see him again. Your uncle's a dead man.
[...]