It is both a traditional festival and a solar term.

Tomb-Sweeping Day and winter solstice are both traditional festivals and solar terms.

1, Qingming

Tomb-Sweeping Day, also known as outing festival, outing festival, March festival, ancestor worship festival, etc. It was celebrated at the turn of mid-spring and late spring. Tomb-Sweeping Day originated from the ancestral belief and the custom of worshipping spring in ancient times, which has both natural and humanistic connotations. It is both a natural solar term and a traditional festival. Grave-sweeping and outing are the two major themes of Tomb-Sweeping Day etiquette and customs, and these two traditional themes have been passed down from ancient times to the present in China.

2. Winter solstice

Winter solstice, also known as solstice, winter festival, child year, etc. It has both natural and humanistic connotations. It is not only an important solar term among the 24 solar terms, but also a traditional folk ancestor worship festival in China. The solstice in winter is one of the eight festivals in four seasons, and it is considered as a big holiday in winter. In ancient times, there was a saying that the winter solstice was as big as a year.

Twenty-four solar terms and their origin

Twenty-four solar terms refer to the special festivals in the dry calendar that indicate the season, phenology, climate change and the establishment of "December construction". They are beginning of spring, Rain, Surprise, Vernal Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Slight Summer, Great Summer, beginning of autumn, Early Summer, Millennium, Vernal Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold.

"Twenty-four solar terms" is the product of ancient farming civilization. It is a special festival in the trunk calendar to express the change of natural rhythm and establish "December" (month). "Twenty-four solar terms" and "December" are the basic contents of the elephant trunk calendar. The twenty-four solar terms were originally formulated according to the changes of stars. The Big Dipper consists of seven stars, including Shu Tian, Tian Xuan, Celestial Pole, Tianquan, Yuheng, Kaiyang and Yaoguang. It is named after the twists and turns of the Big Dipper.

Baidu encyclopedia-24 solar terms