The materials of solar terms and songs reflect agricultural production.

The materials of the solar terms and songs reflect agricultural production, and the solar terms and songs are: spring rain shocks spring and clear valley days, summer is full of mountains and rivers and summer is hot. Autumn dew, autumn frost, little snow in winter and cold in winter.

In ancient China, agricultural irrigation depended on rivers, and agriculture was mainly concentrated in the Yangtze River and Yellow River basins. Until now, farmers in these areas are still engaged in agricultural production according to solar terms, temperature and precipitation.

Most Hakkas make a living by farming, especially planting rice, which has become a part of Hakkas' life. The twenty-four solar terms are also something that everyone who cultivates land must know. This song also lets friends who have never planted fields know what every honest farmer is doing in these 24 honest days.

Twenty-four solar terms were divided by the wise people in ancient China according to the position of the sun on the ecliptic through careful observation of nature and life. The interval between two adjacent solar terms is 15 degrees, and every 15 degrees is a solar term.