According to ancient myths and legends in China, Chang 'e stole the immortal medicine from her husband Hou Yi and flew to the Moon Palace. However, the Qionglou Yuyu is too high to be cold. After Chang 'e confided her regrets to her husband, she said, "Tomorrow is the full moon. You use flour as a pill, round and round like a full moon, and put it in the northwest of the house, and then call my name continuously. At midnight, I can come home. " The next day, do as your wife tells you, and then Chang 'e fruit will fly from the middle of the month and the husband and wife will reunite. The custom of making moon cakes for Chang 'e in Mid-Autumn Festival is also formed from this. The picture of Chang 'e, which shows this plot, is an emotional portrayal of the world's longing for a happy reunion and a happy life. In addition, "the Goddess Chang'e flying to the moon" is the code name of China's space lunar exploration project.