What do you mean by Qingming Sanhou?

Qingming third class: first class, contemporary; Second, the vole became a quail; Wait three times and the rainbow will see you.

Wait a minute, Tong Shihua; Tung refers to white tung flowers. It means that Qingming is coming, and the white tung blossoms and smells pleasant. In spring, everything recovers. In Tomb-Sweeping Day, the sun is more abundant, and all kinds of flowers are blooming. Perhaps, in the eyes of the ancients, the flowering date of the white paulownia was a little late, just at the time of Qingming, so it was regarded as a sign of the arrival of Tomb-Sweeping Day.

Second, the vole became a quail; Quail means quail. The vole hid back in the cave because of the strength of the sun, and the birds who love the sun began to come out and move. The vole is the most yin thing, and the bird is the most yang thing. This means that the yin hides and the yang grows stronger. It can be seen that the sight of grass growing and warblers flying in spring conforms to the changes of nature.

Wait three times, and the rainbow begins to see; Rainbow is a rainbow in the sky, which means it rains during Qingming period, so it appears. "Twenty-four solar terms" says: Wait three times and see you in the rainbow. Rainbow, sound flood, yin and yang meet, pure yin and yang are not in phase. If the clouds are thin and the sun is leaking, rain shadows can be seen in the rainbow.

From "Su Wen Liu Jie's Zangxiang Theory": "The Qi of Three Waiting." The first class is five days, and there are sixty hours in five days, and it becomes Jiazi, so it is called first class; Waiting for * * * fifteen days becomes a solar term. So there are 72 cycles in the 24 solar terms in a year. In the 2nd century BC, Yi Zhoushu's Interpretation of Teachers' Training said: Five days are waiting for the sun, three days are qi, six days are hours, four days are years old, and there are twenty-four solar terms and seventy-two days in a year. Each climate corresponds to a phenological phenomenon, which is called climate response.

Among them, the plant climate should be germination, flowering, fruiting, etc. Animals should start vibrating, singing, mating, migrating, etc. Abiotic climate should include initial freezing, thawing and thunder. The time series changes of 72 climate events reflect the overall situation of climate change in a year.