Which eight solar terms do the eight festivals refer to?

Eight solar terms refer to eight of the 24 solar terms: beginning of spring, Spring Equinox, Long Summer, Summer Solstice, beginning of autumn, Autumn Equinox, beginning of winter and Winter Solstice, which are used to guide folk farming in China.

Twenty-four solar terms are special festivals in the calendar to express the change of natural rhythm and establish "December architecture". They are beginning of spring, rain, fright, vernal equinox, Qingming, Grain Rain, long summer, Xiaoman, busy, summer solstice, light summer, great summer, beginning of autumn, early summer, white dew, vernal equinox, cold dew, early frost, beginning of winter, light snow, heavy snow.

There are four seasons in a year, three months in spring, summer, autumn and winter, and two solar terms in each month, a total of 24 solar terms. Among them, beginning of spring is the first solar term among the 24 solar terms and the first solar term in spring, which means that a new round of cycle has begun. Great cold is the last of the 24 solar terms, which means the weather is extremely cold. After the great cold, a new cycle will begin.

Seasonal alternation:

The twenty-four solar terms basically summarize the exact time of the alternation of four seasons in a year and the laws of some natural phenomena such as phenology in nature. All the year round begins with "four stands", and the so-called "stand" means to start.

Beginning of spring, Changchun, beginning of autumn, beginning of winter. Four seasons alternate throughout the year, and "four stands" means the rotation of four seasons, reflecting the changes in phenology and climate, such as spring, summer, autumn harvest and winter storage, as well as the changing laws of sunshine, rainfall and temperature.

China has a vast territory, mainly located in the middle and low latitudes. Low latitude generally refers to the spatial range between 30 degrees north and south latitude on the earth's surface, that is, within 30 degrees north latitude to 30 degrees south latitude, including tropical and subtropical hot zones, which is the area where global solar radiation and heat are concentrated.

Mid-latitude is the latitude zone between 30 and 60 degrees north latitude. The main air masses at high latitude and low latitude overlap each other in this area, and cyclone activities are frequent. The climate varies greatly at different latitudes.