What is the dividing line between north and south in China?

This dividing line lies between the Yangtze River and the Yellow River. In Gansu, Shaanxi and Henan, it basically runs along the east-west direction of Qinling Mountain and Funiu Mountain, turns southeast in Fangcheng County, Henan Province, enters the eastern part of Anhui Province through Banqiao, and then enters the sea along the main stream of Huaihe River through the irrigation canal in northern Jiangsu Province, with a total length of about 1700 km. There are obvious differences between the north and south sides of the dividing line in climate, vegetation, agricultural production and people's living customs. . According to the regional division of climate, the dividing line between north and south of China is also the dividing line between subtropical zone and warm temperate zone of China. The south is subtropical, with the highest Leng Yue temperature not lower than zero in a year, a long rainy season and an average annual precipitation of 750-1300mm. The north side belongs to the warm temperate zone, and Leng Xia is hot in winter with four distinct seasons. The average daily temperature is below zero, the cold period is generally more than 30 days, the rainy season is short, and the annual precipitation is generally less than 800 mm. From the perspective of climatology and meteorology, the dividing line between the north and the south of China is not static. Meteorologists in China predict that due to global warming, the north-south boundary of China will extend from Qinling and Huaihe rivers to the north of the Yellow River.