The Qingming Festival, also known as the Treading Green Festival, Xingqing Festival, March Festival, Ancestor Sacrifice Festival, etc., is celebrated at the intersection of mid-spring and late spring. The Qingming Festival is an ancient festival of the Chinese nation, which is not only a solemn festival for sweeping tombs and paying homage to ancestors, but also a joyful festival for people to get close to nature, trekking and enjoying the fun of spring. Doo refers to B (or the sun's yellow longitude reaches 15 °) for the Qingming Festival, the delivery of the festival time in the calendar around April 5 around.

This time of the year, angry and prosperous, Yin recession, everything "spit out the old and new", the earth presents the image of spring and bright landscape, it is the countryside trekking and spring line Qing Tomb Sacrifice of a good time of the year. Qingming ancestor festival period is very long, there are 10 days before 8 days after and 10 days before 10 days after the two say, this nearly 20 days are within the Qingming ancestor festival period.

Extended information:

The Qingming Festival began around the Zhou Dynasty. According to legend, astronomers in the Zhou Dynasty used the "Tu Gui" method of measuring the sun's shadow to determine the 24 solar terms, of which Qingming was one. Later, Duke Wen of Jin, Chong Er, designated the third day before Qingming as the Cold Food Festival in honor of his loyal servant, Jie Zi Tui. Because of the close proximity between Qingming and the Cold Food Festival, Qingming gradually incorporated the custom of paying tribute to ancestors during the Cold Food Festival, which gradually developed into today's Qingming Festival.

The Qingming Festival integrates natural festivals and humanistic customs, which is the unity of heaven, earth and man, fully reflecting the idea that the ancestors of the Chinese nation pursued the harmony and unity of "heaven, earth and man", and paid attention to conforming to the time and place and the laws of nature.