We have many festivals in a year. Mid-Autumn Day is a traditional festival in China. It is usually in September or October. On that day, we get together (团聚) and eat a big dinner, we are so happy . We usually eat mooncakes. They are small round cakes. They are sweet. Many families like to enjoy the full moon. People often tell the story of Chang'e. They are happy , they like Mid-Autumn Day so much .