题目：这篇作文是李华写给外国朋友Mike的一封信，主要介绍：
1. 自己学校的环境、食堂、宿舍和课外活动；
2. 中国的一些基本礼仪和生活习惯；
3. 中国的美丽景点；
4. 来中国游玩的小提示（遵守交通、移动支付）。
整体是介绍校园+中国风土人情的书信作文。
范文：
Dear Mike,
I am so glad that you will have a study trip to our school, Suiyuan.
Our school isn't very big. We have lunch on the ground floor, and usually we have a rest in our dormitories. There is a multi-story building that serves as our dormitory.
We also have many after-school activities. For example, we can join the Football Club or the Art Club.
Next, let me tell you some customs in China. We always use chopsticks to have meals. When we meet friends or family, we need to say "Hello" to them. It's important for us Chinese to greet people politely.
There are many beautiful places in China. Santaishan Forest Park is a good place to visit. Every year, many visitors come here to take photos and enjoy the wonderful scenery.
Finally, you should follow the traffic rules. If you want to shop, you can use mobile payment. It's very convenient.
Best wishes,
Li Hua
