What are the three periods of the ancient midsummer in China?

After a while, the eagle became a sacrificial bird. From this day on, the eagle began to perceive the autumn spirit and began to hunt a large number of birds, and displayed them as sacrifices before eating, which was called "righteous act" by the ancients.

Second, the heavens and the earth began to sink. That is to warn people that autumn is a season of convergence, and there is no arrogance and extravagance.

Third class, Walden. He Naideng's "Wo" refers to millet, millet, rice and sorghum crops in general, and "Deng" means maturity, which means beginning autumn harvest.