The mooncake symbolizes reunion, happiness and harmony, because the shape of the mooncake is round and it is eaten together as a family, so it gradually formed the symbol of reunion.
Mooncakes were first recorded in the Tang Dynasty, but in the Ming Dynasty, the custom of eating mooncakes and enjoying the moon in the Mid-Autumn Festival began to spread in the folklore, and after the Yuan Dynasty, the custom of eating mooncakes and gifting mooncakes became more and more prevalent.
Mooncakes were initially used as offerings to the moon god, and every Mid-Autumn night, people would hold moon rituals, and then gradually developed moon viewing and eating mooncakes into essential Mid-Autumn customs.