Shannan Water North is called Yang, mountain North water south called Yin

One called Yin Yao, one called Yang Yao     yao

"Yin" "yang" concept is relatively complex, such as: "Day" for Yang, "month" for Yin; "Male" for Yang, "female" for Yin "," on "for Yang," under "for Yin," dry "for Yang," kun "for Yin," Tian "for Yang," ground "for Yin," dry "for Yang," wet "for Yin," just "for Yang," soft "for yin; "For the yin and so on. What you are asking is mainly about the geography of the central plains and the solar irradiation. Concept formation of the Central Plains, refers to the middle and lower reaches of the Yellow River, north of the Tropic of Cancer, the year will not have direct sun, the sun will be irradiated from the south, the south of the mountain can be irradiated by the sun and the north is not exposed to the sun, so Shannan for Yang, commonly known as "sunny slope"; Water (river) aspect, because the terrain is northwest high to southeast, due to the influence of the ground to the lateral force, the flow of the river to the east will tend to move toward the southeast, the South Bank is more susceptible to the erosion of the river, the South bank is relatively high difference, low humidity, the shore uncomfortable light; North Shore. Therefore, the water south for Yin, water north for Yang. This statement was later extended to the whole of China. People to use this statement to the south of the water north of the "yang" Mountain North Water as "Yin." Many place names in China are related to this, such as "Jiangyin", "Huaiyin", "Hanyang", "Hanyin", "Huayin", "Shanyang" and so on.




"Orange was born in Huainan, Orange, was born in Huaibei," This sentence from the "Yanzi Spring and Autumn, the sixth"-Yanzi make Chu
Yanzi so that there is such a paragraph in Chu: "Orange born in Huainan is Orange, was born in Huaibei, and the leaves are similar, actually taste different."
This sentence literal words, meaning: "Orange tree growth in the Huaihe River South is Orange tree, growth in the Huaihe River north to become the orange tree, just leaves similar, their fruit taste is not the same."
The moral of this sentence is to explain: the same thing, due to different circumstances, the results may have a great difference, to different things to adapt to local conditions, can not blindly copy replication. At the same time, it also shows that the environmental impact on people is very large.

Shannan Water North is called Yang, mountain North water south called Yin