Lantern Festival falls on the fifteenth day of the first lunar month. This is the first full moon of the new year, symbolizing unity and perfection. Lantern Festival is an important part of Spring Festival , and marks the official end of the long holiday.
There are many legends concerning the origins of Lantern Festival.
According to one legend, once in ancient times, a celestial swan came into the mortal world where it was shot down by a hunter. The Jade Emperor, the highest god in Heaven, vowed to avenge the swan. He started making plans to send a troop of celestial soldiers and generals to Earth on the fifteenth day of the first lunar month, with orders to incinerate all humans and animals. But the other celestial beings disagreed with this course of action, and risked their lives to warn the people of Earth. As a result, before and after the fifteenth day of the first month, every family hung red lanterns outside their doors and set off firecrackers and fireworks, giving the impression that their homes were already burning. By successfully tricking the Jade Emperor in this way, humanity was saved from extermination.
Eating yuanxiao (sweet dumplings made with glutinous rice flour) is one of the special traditions of Lantern Festival. Lantern Festival is also called Yuanxiao Festival. Another name for yuanxiao is tangyuan, which literally means "boiled spheres."