According to folklore, Chang’e was Hou Yi’s wife. After Hou Yi shot down 9 suns, Queen Mother West presented him with an elixir of life for immortals as a reward, and he gave it to Chang’e for safekeeping.
However, Hou Yi’s disciple, Peng Meng threatened Chang’e for the elixir. Chang’e helplessly swallowed the elixir herself, soon floating into the sky.
She became immortal and had to stay in the Moon Palace. Yutu felt guilty because he is the one who gave the elixir to Queen Mother West and caused all of this. So, Yutu decided to accompany Chang’e to the Moon Palace.
Hou Yi shouted to the sky and surprisingly discovered the full moon was extremely bright that night. That day was the 15th day of the 8th month of the lunar calendar. He caught sight of a swaying figure that was exactly like Chang’e. He immediately made mooncakes which is Chang’e’s favorite food.
Then, he put a table under the moon and placed the moon cakes with candles on the table, convening a memorable ceremony for Chang’e, who lived on the distant moon.
When local people heard the story of Chang’e, they offered mooncakes and fresh fruits to the moon to worship the Moon Goddess Chang’e. Since then, worshiping the moon and eating moon cakes became a tradition of the Mid-Autumn Festival.