【正确答案】Dear my friend,
I am very happy to learn that you are going to fresher your study in China. I am writing to you to express my warm welcome and provide you with some suggestions.
There is no doubt in saying that a solid knowledge of Chinese language is a precondition for living in China. So please enhance your Chinese speaking ability as possible as you can. I can email you some learning materials if you need them. More importantly, in order to quickly adapt yourself to the new environment, you'd better familiarize yourself with some cultural differences in China, which can be very beneficial to your friend-making in China.
I am looking forward to seeing you!