Depends on circumstances. You must be practical. Watch the attack then choose your style. There's a different style for each situation.

9 seconds sound clip from the Of Cooks And Kung Fu (1979) movie soundboard.

You can hear this line at 00:30:17 in the Blu-ray version of the movie.

Quote context

[...]

- Good, you use his style and attack me.

- Right.

- Get up... Come on. We'll keep on fighting. I will use cooking kung fu.

- Right.

- You hurt?

- Yeah.

- Get the message?

- I do.

- Try again.

- Had enough, want some more?

- No, no more.

- Get up.

- How'd you do it?

- Depends on circumstances. You must be practical. Watch the attack then choose your style. There's a different style for each situation.

- There's more!

- Tell me, was he using this style?

- Not really. I was nervous. He confused me and I mixed up my cooking style with his.

- Oh, I understand, that's fine. Okay.

- Actually, all kung fu styles use similar moves for attack and defense.

[...]