The origin of the Long Summer Festival: a festival named after solar terms.

Among the 24 solar terms, when the long summer solar term comes, it means that summer is coming. With the change of seasons, this is the beginning of summer. How much do you know about this festival named after the temperature change? Come with me now to get to know it. See how much you know about Chang Xia.

Long summer is a solar term established at the end of the Warring States Period (239 BC), which indicates the change of four seasons and the beginning of summer in four seasons.

In fact, according to the standard of climatology, the daily average temperature rises to above 22℃ steadily, starting from summer. Before and after the "Long Summer", only the area south of Fuzhou-Nanling Line in China is really "the trees are dark in midsummer, and the balcony reflects the pond", while some areas in the northeast and northwest have just entered the spring, and the average temperature in most parts of the country is around 18 ~ 20℃, which is ". In May, Sophora japonica blooms in many places. In the long summer, everything is thriving.

Solar term temperature

According to the standard of climatology, summer begins when the average temperature of that day rises above 22℃. Before and after the "Long Summer", only the area south of Fuzhou-Nanling Line really entered the summer in China, while some areas in the northeast and northwest just entered the spring at this time, and the average temperature in most parts of the country was around 18-20℃.

In the long summer, the temperature in the north and south of China is very different, and fluctuates frequently in the same area. The temperature in the rest of South China is around 20℃. The low-altitude valley felt hot in summer as early as mid-April, and the temperature in long summer was above 24℃. Therefore, it is also a period of frequent crop diseases and insect pests, and it is a period when people are prone to catch a cold. For example, Heshui Zuo's "Long Summer" said, "The south is like the summer in the north, and the spring in the north is beautiful. When you are sick, the insects disperse the medicine, and the medicine is hot and cold. "