Keep looking into it. Don't do it alone, either-- I trust you're capable, but I'd rather not take any risks with how little we know right now.

[Just in case it is a trap, but also just in case it's bigger than they anticipated. The last thing he wants is for his right hand to get into any trouble.

After a moment of consideration, he adds with a brief sigh-]

If Wei Wuxian wants to keep investigating, then fine, but if you start getting close to their identities I'd rather you get him out of the loop. I trust your judgment, but he's still not ours, and we don't need everything getting back to Xie Lian.