Dear John,
I am going to study in your university and you and I will share an apartment. I am writing to tell you my living habits and ask for some advice about living there.
Firstly, I stick to the principle of early to bed and early to rise and I loathe staying up late. Secondly, I dislike sleeping with the light on, so you have to switch your table lamp on if I am already in bed. Then I am wondering whether you can tell me something about the campus life in your university and how I can adapt to the campus life as soon as possible.
I am looking forward to your reply.
Yours sincerely,
Li Ming