Well, they used a hook on Hua, pushed it down his throat.
6 seconds sound clip from the Five Deadly Venoms movie soundboard.
You can hear this line at 01:17:56 in the Blu-ray version of the movie.
Quote context
[...]
- The old warder was upset, he knew that it was wrong, but nothing he could do.
- Mr. Ho.
- They tell me that both Lin and Hua were murdered. But there's no wounds.
- Yes, that's quite true. But I know how they died.
- Tell me.
- Well, they used a hook on Hua, pushed it down his throat.
- Lin Kuang's brain was punctured with a long, sharp needle.
- Listen, if they find out I talked to you, I'm sure that they'll kill me as well.
- Take this money to buy, then you'll leave this place, quietly, and quickly.
[...]