It is said that it was set up to commemorate Pinglu when Emperor Wendi was in power. After the death of Emperor Liu Ying of the Han Dynasty, Lv Hou usurped power, and the Lushi family dominated the state affairs. After Lv Hou's death, Zhou Bo, Chen Ping and others eliminated the influence of Lv Hou and established Liu Heng as the emperor of China. Because the day to calm Zhu Lu is the fifteenth day of the first month, after that, every year on the fifteenth night of the first month, Wendi will go out of the palace in disguise and have fun with the people as a souvenir. The fifteenth day of the first month is designated as the Lantern Festival.