- I won't kill him.
- Why not?
- He just called me Lueng Son. Only one man would, and that is my real father.

13 seconds sound clip from the The Shaolin Heroes (1980) movie soundboard.

You can hear this line at 01:01:25.993 in the Blu-ray version of the movie.

Quote context

[...]

- You've no chance. Come on, give me the sword.

- The sword is mine. You'll never have it, unless you can kill me first.

- You heard what he said. The sword belongs to him.

- It's not your concern!

- Son, it's important. Protect the sword.

- Right.

- Huh, you're alive? But that's not possible. Huh! This time, I'll make sure! Ha!

- You dare impersonate me? He disguised himself. It's time we ended the charade.

- I won't kill him.

- Why not?

- He just called me Lueng Son. Only one man would, and that is my real father.

- Look out!

- He was also involved in the plot. He was just one, but there's more. And until they're all dead, my conscience won't be cleared.

- Dad!

- Brother, I'm sorry I suspected you. To think you killed my father. I was stupid, I'm sorry.

- Who are the killers?

- There are traitors within the Ming palace, helping the Mongols. Your father and myself, we were aware, but we didn't know their real identity.

[...]