New Pen friend

Dear Mike，

My classmate Zhang Xinxin wants to make a new pen friend. He is 13 years old. He is a student of No.6 middle school. His favorite color is blue. He likes sports very much. His favorite sport is football. He thinks football is very interesting. His favorite subject is math. He thinks it is very difficult but it is interesting. He is a good boy.

Here is a picture of his family. This is his grandparents. This man is his father. He is a teacher. This woman is his mother. She is a driver. This girl is his sister. They study in the same school. This boy in blue is him.