it is a tradional festival on lunar calenda 15th august. this year's Mid-Autumn Festival will be on 15th September. on this night, traditional chinese people will gather together eating moon cakes and enjoy the bright and round moon, it is chinese second biggest traditional festival with long long history back to Tang Dynasty. In the past, Chinese government did not take this day as national holiday, but now in order to remain the culture heritage, this day has been taken as a national day. During this day, in may cities, there will be some traditonal activites. But most improtant is to gather together with our family. It symbolizes the reunion. Most of chinese people pay great attention to this day. In addition, in other countries of Asia, this festival is still remained and will be celebrated at the same time, such as Korea.