I'm Li Hua, Chair of the Students' Union of our school.

　　Best wishes!

　　Yours,

　　Li Hua

　　参考范文：

　　Dear Daniel，

　　I'm Li Hua, Chair of the Students' Union of our school. I am writing to invite you to take part in the school sports meet to be held on June 26.

　　It will begin at 8：00 am in the playground of our school and last four hours. The sports meet will include track and field events for students, such as the relay, the high jump and the long jump. There will also be some games for teachers, such as the 4×100m relay race and running with a ball.

　　It will be a lot of fun. I'm sure you will enjoy it. We are all looking forward to your coming.

　　Best wishes!

　　Yours,

　　Li Hua