So first. I speak like, a bit of Mandarin on my own and have the Internet for backup but neither of these things are infallible. If I screwed up please let me know I want to know.
Second. Simon throws a lot of Mandarin into his speech. I try to make sure the posts are always understandable without knowing what it is, but below the jump is a list of the more common phrases he uses. (Updated at random intervals)
Okay so Simon will be wanting to talk to people about their medical history whenever he can track them down. It'll be brief and can (and probably should, unless you have a specific idea) be handwaved, but if your character is willing to sit down with him IC, there's a handy little form here for the info he'd want.