Introducing solar terms with mathematics

Beginning of spring: beginning of spring is standing, and beginning of spring is beginning of spring.

Rain: It began to rain and gradually increased.

Sting: Sting means hiding. Sting refers to the sudden movement of spring thunder, which awakens the hibernating animals in the soil.

Equinox: Equinox means equal share. The vernal equinox means that day and night are equally divided.

Qingming: sunny and lush.

Grain Rain: Rain makes a hundred valleys. With sufficient and timely rainfall, cereal crops can thrive.

Long summer: the beginning of summer.

Xiaoman: Summer crops such as wheat are full of seeds.

Miscanthus species: Miscanthus crops such as wheat are mature.

Summer solstice: The hot summer is coming.

Summer heat: Summer heat means heat. Slight summer heat refers to when the climate begins to get hot.

Big institutions: the hottest time of the year.

Beginning of autumn: The beginning of autumn.

Summer heat: place means stop and hide. Summer is the end of hot summer.

White dew: The weather turns cold and the dew condenses into white.

Autumnal equinox: divided equally between day and night.

Cold dew: Dew is cold and will freeze.

First frost: it's getting colder and colder, frosty.

Beginning of winter: The beginning of winter.

Xiaoxue: It's starting to snow.

Heavy snow: the snowfall is increasing, and there may be snow on the ground.

Winter Solstice: The cold winter is coming.

Slight cold: The climate began to get cold.

Great cold: the coldest time of the year.

In addition, there is a song of 24 solar terms:

In spring, the sun is turning and the rain is by the river.

Frightened crows, the spring equinox is dry.

Qingming is busy planting wheat, and Grain Rain is busy farming.

Long summer goose feathers live, birds come here.

Mang seeds were shoveled away, but cotton was not harvested from summer to Sunday.

The summer heat is not hot, but the summer heat is in the dog days.

Beginning of autumn is busy playing indigo and sharpening knives and sickles in summer.

The Millennium is busy cutting land, and the autumn equinox turns over the land.

Before the cold dew is cold, the frost has changed.

In the early winter of October, light snow closed the mountain.

At the fork of a snowy river, you can't sail on the solstice in winter.

A slight cold, a severe cold, and then a year.