The meaning of solar terms in Song Dynasty is.

The spring rain shakes the spring and clears the valley, and the summer is full of mountains and summers. Autumn dew, autumn frost, little snow in winter and cold in winter.

The two festivals remain unchanged every month, with a maximum difference of one or two days. The first half of the year is June 2 1 day, and the second half is August 23.

Solar terms represent the following meanings:

Spring is the beginning of spring: everything begins to recover.

Rain is rain: when it begins to rain, it begins to increase.

Shock is shock: it means thunder to wake up sleeping animals.

Spring and vernal equinox: when the dark sky is as long as the day.

Clearly: the trees are flourishing day by day.

Grain Rain: Wheat and rice can thrive.

Summer is a long summer: when summer begins.

Full is small: when rice and wheat grow rapidly.

The awn is the awn seed: when all kinds of rice and wheat mature.

Summer is the solstice summer: hot summer is coming and the sun is shining directly.

Summer is a little summer: a little summer is when the climate begins to get hotter and the weather gets hotter every day.

Summer is the best summer: it's the hottest time of the year.

Autumn is the beginning of autumn: when autumn begins to come.

Summer is everywhere: at the end of summer, cool weather comes.

Dew is white dew: the weather is getting colder and colder, and the ground begins to have dew.

Autumn is the autumnal equinox: day and night are divided equally, and the night is as long as day.

Cold is cold dew: dew is getting cold slowly and will freeze soon.

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

Winter is the beginning of winter: the beginning of winter, the weather is getting colder every day.

Snow is light snow: when it begins to snow.

Snow is heavy snow: the snowfall will increase obviously, and there will be a lot of snow on the ground.

Winter is the solstice winter: cold winter is coming, and the weather is getting colder every day.

Small is slight cold: the climate is getting cold.

Great cold: the coldest time of the year.

The dates of the two solar terms will not change every month, with a difference of one or two days at most. The first half of the year is around the 6th and 2 1, and the second half is around the 8th and 23rd.