Did Xinjiang rivers freeze during the solar terms in beginning of winter?

China's land area is very vast, spanning many latitudes, which naturally causes the phenomenon of frozen and unfrozen rivers. In Inner Mongolia, China, there should be an ice age. The ice age of the Halaha River near Aershan is longer in a year, because the temperature here can reach MINUS 40 degrees in winter, but there is no ice on a section of the Halaha River.

The Haraha River is a river near Aershan. It is located in Inner Mongolia, China. Its latitude is higher. Close to the north of China, or it has reached the northernmost part of China except Northeast China and Xinjiang. The same is true of the Halaha River during the winter ice age. The reason why the middle section of Laha River does not freeze is that there is geothermal energy under a riverbed about 20 kilometers below the middle section of the river. That is, what we call hot springs or volcanic cracks, geothermal energy is easily emitted, which causes the rivers here to dry up, and the outside temperature is very low, but it still won't freeze.

In fact, this river doesn't freeze just like the vats outside the Forbidden City don't freeze in winter, except that the water in those vats doesn't freeze because of artificial heating, while the 20-kilometer-long section of the Halaha River doesn't freeze because of the geothermal energy of nature. So in winter, he is influenced by the geothermal energy below, and will not be frozen by the cold air outside, because the river itself is mobile, and then it is heated to a certain temperature below.

Qinling Mountains and Huaihe River divide China into north and south. Basically, the rivers in the south are frozen areas, and the rivers in the north are basically not frozen, because even if it is below zero, the rivers may not freeze, and the rivers are very mobile. As long as they keep flowing and there is enough water, it is difficult for them to freeze completely. Just like the sea, even if the temperature is very low, most parts of the sea will not freeze because of its great fluidity.