The treasure wasn't in the house, but there could have been a map showing where it's hidden.
7 seconds sound clip from the Five Deadly Venoms movie soundboard.
You can hear this line at 01:23:58 in the Blu-ray version of the movie.
Quote context
[...]
- Still, if I combined with one, we could beat the other four.
- Oh, I see. The problem is who is the Scorpion, we don't know.
- You mean you haven't got any clues at all?
- No, but I know that he's here. And it's very likely he's got that treasure.
- The treasure wasn't in the house, but there could have been a map showing where it's hidden.
- If Scorpion has it, then he'll leave. If he does, then we'll never find him.
- All we can hope is that he stays here and find him somehow.
- That's right. Well come on, let's practice, huh?
- Teacher said the Number One was called Centipede because he moved so fast.
- Right!
[...]