Jiangxi belongs to the south, and the Qinling-Huaihe line is the dividing line between the south and the north of China. Jiangxi is located in the south of this line, so it belongs to the south.

From the name, the drawing method of Qinling-Huaihe Line seems very simple. Just draw a line along Qinling and Huaihe River. But when you face a large-scale map of China, you will find that there is no way to start.

The Qinling Mountains start from Baishishan Mountain in Gansu Province in the west, and the Qinling-Huaihe River is divided into north and south, only the eastern part of China is divided. How to divide the western part of China into north and south parts is very interesting. The western part can indeed be divided into two regions, but the north and south are reversed, and the cold and heat are reversed. Along the Qinling Mountains to the west, there are roughly two east-west mountains connected with the Qinling Mountains: one is Qilian Mountain connected with Altun Mountain all the way to the west.

The other column is the Kunlun Mountain and other veins that start from Pamirs in the west and stretch for more than 2, kilometers to the east. If the Qinling Mountains are divided into north and south in the west, these two mountain systems can be considered

Extended information:

The natural boundary between north and south in China is actually the climate boundary first. As far as the heat zone is concerned, it is the boundary between the warm temperate zone in the north and the subtropical zone in the south; In water division, it is the boundary between arid, semi-humid climate in the north and humid climate in the south; In the division of rainy and dry season types, it is the boundary between spring drought, summer rain climate in the north and spring rain, plum rain and summer drought climate in the south.

however, this transition and change is completed through a fairly wide belt. On the banks of the Huaihe River, which are ten or twenty kilometers apart or even wider, we can't see any changes in climate, agriculture, natural landscape and so on. In fact, because the Huaihe River area is mainly a plain area, the cold and warm air flow between the north and the south is unimpeded, and it is indeed impossible to produce a clear dividing line between the north and the south.

Take the example of "orange crossing the Huaihe River and turning into bitter orange in the north". Because of the strong cold air in the middle and south of winter in the eastern part of China, it often brings fatal low temperature to citrus. Therefore, even on the banks of the Yangtze River south of Huaihe River, there is generally no economic value in growing citrus except for local favorable areas.

The Qinling Mountains in the west of the north-south boundary block the cold air in the north in winter, so Lingnan becomes a typical subtropical zone (it can grow citrus and other subtropical index plants that can't grow on both sides of Huaihe River at the same latitude) when the north of the Qinling Mountains is a typical warm temperate zone. However, the Qinling boundary is not a line.

Because the southern slope of Qinling Mountains is subtropical only when it is about 1 meters above sea level, and the width between the contour lines of the two slopes of Qinling Mountains, that is, the width of the boundary zone, is about 9-11 kilometers. Moreover, in history, the north-south boundary zone moved north and south with climate change. If global warming continues, the subtropical northern boundary may even be pushed northward to the middle and lower reaches of the Yellow River in the future.

Baidu Encyclopedia-Qinling-Huaihe Line