What are the solar terms behind the heat?

After the heat, the solar term is the Millennium.

The Millennium is the fifteenth of the twenty-four solar terms in the lunar calendar. "Twenty-four solar terms" said: "August Festival ... Yin Qi is getting heavier and heavier, showing white." As the weather gets colder and colder, you will find many dewdrops on the ground and leaves in the morning, which is named after the water vapor condenses on them at night. The ancients used four seasons with five elements, and autumn was golden and golden white, so white was used to describe autumn dew.

Being in the heat is "out of the heat", that is, out of the heat. It is the14th solar term in the twenty-four solar terms of the lunar calendar. Summer solar terms mean entering the autumn with meteorological significance. After the summer, the temperature in the area north of the Yangtze River in China gradually drops.

Summer is a solar term reflecting the temperature change. "Chu" means to hide and die, and "early summer" means that the hot summer has passed. "Twenty-four solar terms" said: "If you go, you will stop, and the summer will stop here." "Chu" means termination, which means that the summer heat is about to pass, the summer heat will end on this day, and the temperature in most parts of China will gradually drop. Being in summer is not only different from mild summer, severe summer, slight cold and severe cold, but also represents the transition from hot to cold.

China divided the summer heat into three periods: "The eagle is a sacrificial bird; Second, wait for the beginning of heaven and earth; Three Hou Wonaideng. " In this solar term, eagles began to prey on birds in large numbers; Everything between heaven and earth began to wither; "Henaideng" refers to millet, millet, rice and sorghum crops, and "Deng" means maturity.

"White Dew" is a festival that reflects the temperature changes in nature. Dew is a unique natural phenomenon after the solar term of "White Dew". The weather at this time, as the Book of Rites said: "The cool wind comes, the dew falls, and cicadas sing." According to the explanation of "white dew" in the twenty-four solar terms-"water and soil condense dew, autumn belongs to gold, golden white and white dew, and qi begins to be cold". The ancients also said in Xiao Weijing: "The fifteenth day after the summer heat is white dew", and the yin is getting heavier and heavier, and the dew condenses into white. In fact, meteorology shows that at this time of the solar term, the weather becomes cool and the sun is still very hot during the day. But as soon as the sun returns to the mountains, the temperature will drop rapidly. At night, the water vapor in the air will condense and form tiny water droplets, which are very densely attached to the green stems, leaves or petals of flowers and trees and are white. Especially after the morning sun exposure, it looks more crystal-clear and attractive, thus obtaining the beauty of "White Dew".