Mooncakes originated in the Tang Dynasty. In ancient times, every August, there was also the custom of Yue Bai. On August 15th, the moon is full, and Mid-Autumn moon cakes are fragrant and sweet. This proverb tells the custom of people eating moon cakes on Mid-Autumn night. At first, mooncakes were used as sacrifices to the moon god. Later, people gradually regarded the Mid-Autumn Festival as a symbol of family reunion, and gradually mooncakes became holiday gifts.

During Tang Gaozu's reign, General Li Jing won the Xiongnu conquest and returned triumphantly on August 15th. At that time, a businessman from Turpan congratulated Tang Emperor Li Yuan and presented moon cakes. Tang Gaozu Li Yuan took the moon cake and took out the round cake. He smiled and pointed to the moon in the sky and said,' We should invite toads to the Hu cake'. (Historically, toads are the symbol of the moon.) After that, he shared the cake with the ministers. At the 15th day of August in the early days of Tianbao in the Tang Dynasty, Emperor Xuanzong and Yang Guifei enjoyed the moon and tasted' Hu Bing'. Tang Xuanzong felt that the name of' Hu Bing' was not very nice. At this time, Yang Guifei saw the moon in the sky and had some thoughts in her heart, so she proposed to call this round cake' Moon Cake'. After listening to this, Emperor Xuanzong agreed, and' Moon Cake' became popular.

Mooncakes have developed to the present, and the categories are more diverse. Because of the eating habits and customs in each region, mooncakes are different from place to place. Among them, Beijing-style moon cakes, Soviet-style moon cakes and Cantonese-style moon cakes are widely loved by the public in these areas. Moon cakes are round, so they symbolize reunion and are necessary for Mid-Autumn Festival. On the night of the festival, everyone will eat and sacrifice moon cakes together.

The implication of eating moon cakes in Mid-Autumn Festival is reunion, which reflects people's good wishes for family reunion. On the evening of August 15th, the whole family sat together to eat moon cakes, which formed a reunion of the family.

There are several theories about the origin of moon cakes. I don't know which one is correct, but they all mean the moon and reunion. The whole family will have a reunion on the Mid-Autumn Festival on August 15th.