Beginning of winter is the first of the 24 solar terms.

Beginning of winter is the 19th of the 24 solar terms. 24 solar terms is: beginning of spring, rainy, startled, vernal equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Slight Summer, beginning of autumn, Early Summer, White Dew, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold. Twenty-four solar terms are formulated according to the position change of the earth on the ecliptic (that is, the orbit of the earth around the sun). Twenty-four solar terms can reflect the changes of seasons, guide agricultural activities and affect the food, clothing, housing and transportation of thousands of families. April 20 14, the Ministry of Culture of China officially began to declare the "24 solar terms" to UNESCO's "Intangible Cultural Heritage of Humanity".