What does it mean to show autumn in autumn?

Autumn dew refers to the part of autumn in the lunar calendar, in which the first autumn refers to beginning of autumn, the place refers to midsummer, the dew refers to the white dew, and the second autumn refers to the autumnal equinox.

Autumn dew is a sentence describing the solar terms in autumn in Twenty-four solar term song. The original sentence is autumn dew, cold refers to cold dew, and the first frost refers to the solar terms in the first frost. These seven short words show us the whole autumn process.

"Twenty-four solar term song" is a poem compiled for the convenience of remembering the twenty-four solar terms in the ancient calendar of China. Among them, solar terms refer to 24 solar terms and climate, which is a calendar made in ancient China to express seasonal changes and guide farming, and is also the crystallization of long-term experience and wisdom of working people in ancient China.

The original words of "solar term song" are "Spring rains startle spring and clear valleys, summer is full and summer is hot. Autumn frost, winter snow. " Through four sentences, it describes all the solar terms in four seasons: spring, summer, autumn and winter.

The first spring word refers to the beginning of spring; Rain means rain; Surprise refers to shock; The second spring word refers to the vernal equinox; Qing refers to Qingming; Gu refers to Grain Rain; The first summer word refers to long summer; Full, refers to the small full; Mang, refers to mang species; The second summer word refers to the summer solstice; Summer is connected, which refers to the two solar terms, big summer and small summer.

In the lyrics of winter solar terms, the first winter word refers to the beginning of winter; Two snows refer to light snow and heavy snow respectively; The second winter word refers to the solstice of winter; A slight chill means a slight chill and a severe chill.

The operation of the 24 solar terms is inseparable from the study of astrology in ancient China. The circular rotation of the Big Dipper is considered to be closely related to the seasonal changes. Taking the direction pointed by bucket handle, namely the Big Dipper, as the standard for judging seasons, it is called sword fighting, also known as Jian Yue. Bucket handle revolves around the east, south, west and north, which is called "one year old". It began in the beginning of spring and ended in the great cold. So a year is divided into 24 segments, about 15 days a solar term.