How are the 24 solar terms of the China lunar calendar arranged?

The time when the sun runs along the longitude of the Yellow River from zero 15 degrees is called "a solar term". It runs 360 degrees every year and * * * experiences 24 solar terms. Among them, beginning of spring, Jingzhe, Qingming, Changxia, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter, Heavy Snow and Xiaohan are "solar terms"; Rain, vernal equinox, Grain Rain, Xiaoman, Summer Solstice, Great Summer, Early Summer, Autumn Equinox, Early Frost, Light Snow, Winter Solstice and Great Cold are the "middle qi". "Solar term" and "neutral qi" appear alternately, each lasting 15 days. Now people have called "solar terms" and "neutral gas" solar terms.

The length of the calendar month in the lunar calendar is based on the first month of the lunar calendar, with 30 days in the first month and 29 days in the second month. The first lunar month and the second lunar month complement each other, making the average length of calendar months close to the first lunar month.

The name of the lunar month is determined by "Zhong Qi". That is, the month containing "rain" is January; February is a month with "vernal equinox"; March is the month of Grain Rain; April is a month with "small fullness"; May is the month of "summer solstice"; June is the month of "great summer heat"; July is the month of "summer heat"; August is the month of autumnal equinox; September is the month of "first frost"; 10 is the month of "light snow"; 1 1 month is the month of "winter solstice"; 1February is the month of heavy snow. There is no month with neutral gas like last month's leap month.