What festival is it when the east wind blows down ten thousand flowers and trees and stars like rain?

This poem "Thousands of flowers and trees are blown down by the east wind, and stars are also blown down like rain" depicts the scene of the Lantern Festival. Lantern Festival, also known as Shangyuan Festival, Xiaoyuanyuan Festival, Yuanxi Festival or Lantern Festival, is the first important festival after the Spring Festival. On this day, people will hold various celebrations, such as watching lanterns, solve riddles on the lanterns and eating Yuanxiao. In this poem, the author depicts the bustling scene of the Lantern Festival night through vivid brushwork: the east wind blows, lanterns bloom like thousands of trees, fireworks bloom in the air, and stars fall. This poem was written by Xin Qiji, a poet in the Song Dynasty, and it is a famous piece describing the night scene of the Lantern Festival. The "flowers and trees" and "stars like rain" mentioned in the poem represent lanterns and fireworks on the night of the Lantern Festival respectively. These two elements are isomorphic, forming a unique landscape of the festival, which makes the whole poem full of romantic and dreamy colors. Lantern Festival, also known as Shangyuan Festival, Xiaoyuanyuan Festival, Yuanxi Festival or Lantern Festival, is one of the traditional festivals in China. It is on the15th day of the first month of the lunar calendar every year. It originated in the Han Dynasty, and it is said that it was set up to commemorate Pinglu during the reign of Emperor Wen of Han Dynasty. During the reign of Emperor Wu of the Han Dynasty, the sacrificial activities of "Taiyi God" were scheduled for the 15th day of the first month, and gradually became a folk custom. With the introduction of Buddhist culture in the Eastern Han Dynasty, the Lantern Festival was integrated with Buddhist elements and Taoist culture.