At that time, the Shrimp and the Crab were the champions, fighting for the Emperor.

7 seconds sound clip from the Mysterious Footworks of Kung Fu movie soundboard.

You can hear this line at 01:22:01.321 in the Blu-ray version of the movie.

Quote context

[...]

- But even experience can be defeated by youth.

- Three-Eyes Liu, you have a good heart and you are brave.

- I know about you from beggar man. He told me what happened to you.

- You're lucky to be alive. You fought with real experts. You might have died.

- Mister, you mean you know these men?

- Yes, he does. 20 years ago, he had a fight with 'em.

- A fight?

- Yeah!

- At that time, the Shrimp and the Crab were the champions, fighting for the Emperor.

- They were sent to the north secretly to learn a new technique of kung fu, which they could use to suppress the rebels, especially Shaolin kung fu.

- Many revolutionaries have died at their hands. They're dangerous men. So I...

- In a fight, they like to attack together. They aim for the legs with all their force. It's a most powerful strike. And my legs were broken by them.

- Since then, they have never been defeated.

- Then what should we do?

[...]