What is the last sentence connecting mango seeds in summer?

The last sentence, which is associated with the summer full of mango seeds, is: the spring rain surprises the spring and the bright valley. This is the first sentence in the twenty-four solar terms, which means that the spring rain is in full bloom, and spring is coming, and it is drenched on the frightened spring thunder frog, which is called Grain Rain Spring Tea on the Spring Equinox. "Twenty-four solar term song" is a small poem compiled for the convenience of remembering the twenty-four solar terms in the ancient calendar of China, and there are many versions circulating.

"Twenty-four solar term song": Spring rains shake the spring and clear the valley, and summer is full of heat. Autumn dew, autumn frost, little snow in winter and cold in winter. Solar terms refer to the twenty-four solar terms and climate, which is a supplementary calendar formulated by China in ancient times to guide farming, and is the crystallization of long-term experience and wisdom of working people in ancient China.

Solar terms included in the Song Dynasty: beginning of spring, Rain, Sting, Equinox, Qingming and Grain Rain. Chang Xia and Xiao Man? , awn seed, summer solstice, light heat, great heat. Beginning of autumn, Chushu, Bailu, Autumnal Equinox, Cold Dew, First Frost. Beginning of winter, light snow, heavy snow, winter solstice, slight cold, severe cold. The solar term song is more suitable for agricultural guidance in the middle and lower reaches of the Yellow River. Farmers are still engaged in agricultural production according to solar terms, temperature and precipitation.