范文：

Dear Tom,

　　I am very glad you show great interest in our Chinese culture and desire to have a better understanding of the Mid-autumn Festival. I would like to share something about it with you.

　　The Mid-Autumn Festival is a traditional festival in China. It falls on August 15th in lunar calendar every year. It is the time when the moon is said to be at its brightest and fullest.

　　On this day, family members will have a happy get-together. So Chinese people value this festival for its important meaning of “reunion”. As a saying goes, “The moon in your hometown is almost always the brightest and roundest”. Many people who live far away from homes want to go back to have a family reunion. Most families have a dinner together to celebrate the festival.

　　At night the moon is usually round and bright. People can enjoy the moon while eating moon-cakes which is the symbolic food for this festival. It represents the “reunion” just like the full moon. How happy it is to enjoy the moon-cakes while watching the full moon with family members gathering together!

　　I hope my introduction can be of some help to you.

Yours,

Lihua