How did the custom of eating moon cakes on Mid-Autumn Festival come from? What is the relationship between moon cakes and Chang 'e?

The custom of eating moon cakes in Mid-Autumn Festival: Moon cakes represent family reunion and are essential food for Mid-Autumn Festival. The custom of eating moon cakes in Mid-Autumn Festival is said to have been handed down from the end of Yuan Dynasty. Spread to the Qing Dynasty, the people of the Central Plains refused to accept the terrible rule of the Mongols, and successively created the Rebellion Yuan. Zhu Yuanzhang tried to cooperate with the resistance energy, but the Yuan army searched hard and took pains to pass on the news. So, Liu came up with a plan, ordered pancakes to be made, and hid the note that said "August 15th Uprising" in the pancakes. Then let people transport them separately to peasant uprisings all over the country, and inform these people to rebel and respond on the night of August 15. Tang Xizong ate moon cakes on Mid-Autumn Festival, which was very delicious, so he ordered the Imperial Hotel to give them to new scholars in HongLing. This may be the first historical record about moon cakes that we can see. Moon cakes in the Song Dynasty are called "Lotus Leaf", "Golden Bull" and "Magnolia", and their practices are more particular. Writer Su Shi praised in a poem: "Small cakes are like chewing the moon, full of crisp." Crispy is a crisp cake, and the cake is sugar. It tastes crisp, sweet and delicious.

The relationship between moon cakes and Chang 'e: People will still look at the moon and see the figures of fairies, moon rabbits, osmanthus trees and Yong Dong in the moon. When we look at the moon, we will inevitably think of the story of a fairy flying to the moon, so many people will be curious about the relationship between Chang 'e and Hou Yi and Yong Dong. In the impression of many people, Chang 'e and Hou Yi are husband and wife, but they are not. Hou Yi is not the same person. The fairy's husband is called Hou Yi, and the one who shoots the sun is called Hou Yi. It is precisely because Hou Yi is the junior of Hou Yi that he was named Hou Yi.

Yong Dong and the fairy should have a professional relationship. After all, according to legend, Yong Dong was punished by the Jade Emperor, so he cut down trees in Guanghan Palace. The legendary osmanthus tree only needs to be cut once, and the leaves on the tree will automatically grow home, so even if the tree has been cut down in Yong Dong for so many years, nothing has changed. There is also a legend that Yong Dong's wife committed adultery with Yan Di and Huang Di's grandson Boling, so she killed Bailing in a fit of pique and was exiled to the moon by Yan Di and Huang Di to cut down trees. ?