What are the whole poems "People in Summer", "People in Summer" and "Summer Fever"?

The whole poems of People in Summer, People in Summer and Summer Fever are as follows:

Twenty-four solar term song

Anonymous? [unknown]

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.

The origin of solar terms:

In ancient China, the sundial was measured by earth gauge, and the longest sundial was defined as "solstice" (also called solstice, that is, the lunar calendar, solstice and winter solstice of the four images in Taiji diagram), and the shortest sundial was "solstice" (also called short solstice and summer solstice). In spring and autumn, one day the length of day and night is the same, which is called "vernal equinox" and "autumn equinox", and there are many people of all ethnic groups.

There were only four solar terms in Shang dynasty (four images, namely four seasons), and in Zhou dynasty, it developed to eight (eight diagrams). By the Qin and Han Dynasties, the 24 solar terms had been completely established. In BC 104, the taichu calendar written by Deng Ping officially set 24 solar terms in the calendar, and defined the astronomical position of the 24 solar terms.