What solar terms do awn species refer to?

Mangxia refers to two solar terms, namely Mangshan and Summer Solstice.

Twenty-four solar terms Song shortened the solar terms into one word and regrouped them.

Ear seed, also known as "busy seed", is the ninth solar term in the twenty-four solar terms, the third solar term in summer and the beginning of the afternoon month in the dry calendar. The yellow meridian of the sun reaches 75 degrees, which is celebrated on June 5-7 of the Gregorian calendar every year. Mang seed means "food crops with awns can be planted". This season, the temperature rises obviously, the rainfall is abundant and the air humidity is high, which is suitable for planting cereal crops such as late rice. Agricultural planting is bounded by the solar term "awn seed", and the survival rate of planting has become lower and lower since then. It is the reflection of ancient farming culture in festivals.

The summer solstice is the 10 of the 24 solar terms. Fighting means noon; The longitude of the sun is 90 degrees, and the Gregorian calendar crosses on June 2 1-22. The solstice in summer is the turning point of the sun's northward movement. After the summer solstice, the sun will go back and the point of direct sunlight will move south from the Tropic of Cancer. For the area north of the Tropic of Cancer in China (23 26' north latitude), the height of the sun began to decrease day by day from summer to noon in the future. For the area south of the Tropic of Cancer in China, the height of the sun began to decrease day by day from summer to noon in the future, and the direct sunlight returned from the south.