The Origin of Winter Solstice in China

The winter solstice is Du 1 of the four solar terms of 20 Bai, and it is one of the most important solar terms. The winter solstice is a solar term divided according to the text of the day. In ancient times, it is called "short day" Shu and "short day solstice". On the winter solstice, the sun is located at 270 degrees yellow longitude, and the sun is almost directly on the Tropic of cancer. It is the shortest day of the year in the northern hemisphere, and correspondingly, the longest day in the whole year in the southern hemisphere on the winter solstice.

The winter solstice is also known as the winter festival. According to the traditional Chinese calendar, five days are a sign, three times and fifteen days are a festival or a Qi. In a year, it is divided into 12 sections and 12 Qi, collectively known as the 24 solar terms. This is the solar term used in the school of choosing the day. In the school of choosing the day, the auspicious lesson is selected according to the solar term of the lunar calendar. The so-called lunar calendar is the combination of the solar calendar and the lunar calendar Four solar terms (the solar cycle is divided into 12 stages, and then divided into 24 solar terms, one section and one Qi is a month. ）The lunar calendar is a pure month (according to the cycle of the moon). ）The days are on December 22 or 23 of the national calendar.