Why did the early Shang Dynasty refer to July?

Because Shang is one of the five tones and belongs to autumn. And July is the first month of autumn, so July is also called the first business, August is also called the second business, and September is also called the late business, sub-business, and seasonal business.

The nicknames of July in the lunar calendar are Xiangyue, Blue Moon, Liang Yue, Guayue, Qiao Yue, Frosty Moon, Qiu Meng, Early Autumn, Early Autumn and Early Autumn. Autumn is one of the four seasons. In China, traditionally, "beginning of autumn" in the 24 solar terms is taken as the starting point of autumn. Entering autumn means that rainfall and humidity tend to decrease or decrease, and everything in nature begins to mature from lush.

Solar terms in July of the lunar calendar:

1, hot summer

It means "out of summer", which means leaving the heat. Summer is the14th solar term among the 24 solar terms of the lunar calendar. The time point is August 23rd, Gregorian calendar, and the sun arrives at 150. Summer solar terms mean that we are about to enter the autumn with meteorological significance. After the summer, the temperature in the area north of the Yellow River in China gradually drops.

2. White deer

As the weather gets cold, you will find many dewdrops on the ground and leaves in the morning. This is because water vapor condenses on it at night, so it is named Bailu. The ancients used four seasons with five elements, and autumn was golden and golden white, so white was used to describe autumn dew. Entering the "Millennium", I will feel a little cold at night.