The theory of long summer in the morning and long summer in the evening

Early summer and long summer say that the first few hours of a day are early summer and long summer, and the last few hours are late summer and long summer.

In general, long summer in the early days means that the long summer time "stands" before 10 am, after 7 pm, and long summer in the late days means that the long summer time is after 10 am and before 18 pm.

The ancients thought that "long summer and early cold" and "early summer" meant that it would not be too hot this summer. "It's too hot at the end of the long summer." The long summer time is "late", which means that this summer will be particularly hot. I guess even cows can't stand it. The word "standing" means long summer. The word "summer" in ancient China means "big" instead of "summer", which means that plants sown in spring have grown upright. Relevant data show that China established the solar term of long summer in the Warring States period, which means that crops will grow vigorously from this time. Although a long summer means the beginning of summer, the time to enter summer is different because of China's vast territory. Strictly speaking, in the long midsummer season, only the area south of Fuzhou-Nanling line in China has entered the real summer, while some areas in the northeast and northwest have just had the breath of spring.