One possible version: Dear Chris,
I'm Li Jin, monitor of Class One, Grade Eleven. Welcome to our class in China. I'm glad you can join our class, which is a wonderful group. Every student not only enjoys studying, but is ready to help each other. So if you join us, I'm sure you can get along well with them and quickly make friends with them, too.
The climate here is changeable. Now, it is very cool in autumn and cold in winter, so don't forget to bring different kinds of clothes with you. In your spare time, you can visit some famous places of interest in our city, as well as tasting all kinds of delicious traditional Chinese local foods. We Chinese use chopsticks to have Chinese food instead of forks and knives. And I can be your tour guide if you like.
As an American, there is no doubt that you are familiar with your country. So if it is convenient to you, please bring a map of America and some photos of your families,friends, and some famous buildings with you, and give us some speeches to introduce your school life and different culture of America. And we’ll exchange our different lives and cultures together then. looking forward to your coming!
Yours Li Hua
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