[Which is precisely the WRONG interpretation of what he was going for!]

Okay -- what did?! Ending up here? You did it on purpose?!

["Here" meaning "in general". Yu's response was simple, yes, but enough to assume that he was clearly referencing the house and their current situation than anything else. He's just stupefied at the moment; suddenly running into him and all.]

That doesn't even make sense. [FTR.] How long have you even been under there?!