The folklore of eating moon cakes in Mid-Autumn Festival: It is said that on the 15th day of the eighth lunar month, Yang Guifei and Li Longji, Emperor Xuanzong of the Tang Dynasty, watched the moon together. On the table next to them, there were not only grapes, watermelons, pomegranates and other fruits, but also more than ten kinds of cakes, including sweet, salty, stuffed, square and round cakes. The ancients called cakes square and cakes round.

Yang Guifei picked up one of the cakes with stuffing and tasted it. She found the taste excellent, so she greatly appreciated it. She asked the name of the cake, but no one here could name it. He also called the chef who made cakes, but he didn't even know his name. So, Li Longji said in unison with everyone, "Let's give the imperial concubine a name."

The imperial concubine looked down at the round cake in her hand, then looked up at the bright moon in the sky and casually walked by, "Let's call it moon cake." Everyone cheered in unison, so there was a "moon cake" specially for enjoying the moon on August 15. ?

The custom of mooncakes spread in the Yuan Dynasty. On New Year's Day, Zhu Yuanzhang led the people to resist the tyranny of the Yuan Dynasty. They agreed to rise bravely on August 15th to gather people from far away, but the news could not be leaked. Therefore, they would give mooncakes to each other in the early days of August 15th, and then put paper with notes into them to pass on the latest news and activities to each other.