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.
- Yeah.
- I do.
- Get up.
- 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.
- Practice with me... cooking techniques.
[...]