Folklores related to the solar terms and the Song Dynasty are detailed in Nature Journal 24.

A detailed introduction of the folk legend Song about 24 solar terms in Nature Magazine: 24 solar terms originated in the Yellow River Basin. According to legend, as early as the Spring and Autumn Period, four solar terms were set: midsummer, midsummer, midsummer and midsummer. After continuous improvement and perfection, by the Qin and Han Dynasties, the 24 solar terms had been completely established.

In the Western Han Dynasty, the name of "Twenty-four solar terms" first appeared in the book Huainanzi Astronomical Training. During the period of Emperor Wu of the Han Dynasty, "Twenty-four solar terms" were absorbed into taichu calendar as a supplement to the calendar guiding agriculture. The solar terms are divided by the "average time method".

Xia Zheng Xiao in the early years of the Western Han Dynasty is a phenological monograph, which records the phenology, meteorology, astronomical phenomena and important political and agricultural activities, such as farming, sericulture, horse breeding and so on. There are twenty-four records of Hua Xinfeng in Guangfang Qunpu written by Emperor Kangxi of Qing Dynasty.

According to this record, the plum blossom in Hua Xinfeng is the first and the azadirachta flower is the last. After 24 romantic journeys, the long summer begins. Twenty-four o'clock in Hua Xinfeng not only reflects the natural phenomena of flowering and seasons, but more importantly, it can be used to master the farming season and arrange farming.