He gestures out his hands. "I like hearing about other worlds all the time! Not any different from that, is it?" Jovial, simple. He can move on this easily, though he does think to say:

"And if you're here, you might as well learn whatever you like. I didn't do a lot with the fighting those monks were teaching though, so can't help you there." Ah. He folds his arms loosely, nodding. "But if it's just about going up against illusions -- Wei Wuxian. Did you hear about his lessons? He's still resting up, but he's good to ask."

...

...but then his brow dips. "Um, the Wei Wuxian in a room by himself right now."

Sorry, Teddy: there's multiple of this guy too.