"fire that isn't fire.." That is an interesting thought as well. It makes him even more curious about what he has seen in his dreams about what it could do. But he doesn't want to pressure him too much about it.

"Of course! I don't mind at all. Anything you need help with, just let me know."

Wei Wuxian is perfectly capable of assisting with any kind of project someone throws at him. Helping someone practice magic seems like a perfectly exciting way to spend a day.