Why is the water in Shannan and the north wind good?

This statement mainly exists in the northern hemisphere. For details, see Yugong Yishan: from southern Henan to Hanyin. "Climbing Mount Tai" is the sun of Mount Tai, and the water flows westward; Its yin helps water flow eastward. You: The so-called Huayang Cave is the sun of Huashan. 1. The mountains in the south and the water in the north are all yang, while the mountains in the north and the water in the south are all yin.

2. Yang refers to the side that sees the sun, while Yin refers to the side that doesn't see the sun. The ancients called the side that sees the sun south. The mountain is higher than the ground, and there is no sunshine on its back (that is, in the north), so it is sunny in the south and cloudy in the north. Water refers to rivers. The river is below the ground, and the sunny side is in the north, and the south can't get sunshine, so the north of the water is sunny and the south is cloudy.

3. Geography: The middle reaches of the Yellow River are north of the Tropic of Cancer. There will be no direct sunlight all year round, and the sunlight will only come from the south. So for the mountain, the south of the mountain can be illuminated by the sun, that is, there is sunshine as the sun; While the north is cloudy. On the contrary, in terms of water (river), because the terrain is high in the northwest and gradually low in the southeast, due to the influence of geostrophic bias, the rivers flowing east tend to flow southeast, and the south bank is easily eroded by rivers, with large relative height difference, low humidity and uncomfortable illumination under the shore; The north shore is the opposite. Therefore, for the water system below the ground, the sun will not shine on the south bank of the river, but only on the north bank. So the water in the north is yang and the water in the south is yin.

It is sunny in the south and cloudy in the north, because the two places are affected by solar radiation differently. The water in the south is cloudy and the water in the north is clear. Because of the influence of the earth's rotation deviation, the south bank of the river is wetter than the north bank. Because most of China is located in the north of the Tropic of Cancer, the direct point of the sun is always located in the south of the Tropic of Cancer. The sun mainly shines from south to north, and the south slope is sunny. The south can get more solar radiation and heat. Therefore, the south of the mountain is yang and the north of the mountain is yin. At the same time, due to the influence of the earth's rotation deviation, rivers will shift to the right bank when flowing, while most rivers in China are east-west, and the south bank (right bank) of rivers is vulnerable to the impact and erosion of rivers, resulting in a situation of wet south and dry north. So the water in the north is yang and the water in the south is yin.