"I'm glad to hear it, but there's no need to thank me. At least until we see how this all works out." Honestly, he finds Shang Qinghua... adorable? Adorably old-fashioned, at least. "By the way, I haven't heard people speaking like that to each other in real life since I was a child. It really is all right to speak less formally, no one's going to think you're being discourteous. If you keep it up, they'll think you're even older than me."