"Hanyin" refers to the south of Hanshui River. In ancient times, Shannan and Shuibei were Yang, and Shanbei and Shuinan were Yin, so "Hanyin" refers to the south of Hanshui, and "Hanyin" comes from Yishan, Gong Yu: "It refers to the south of Henan and reaches Hanyin." It means: all the way to the south of Yuzhou and to the south bank of Hanshui River.

Hanshui River is a tributary of the Yangtze River and occupies an important position in history. Often juxtaposed with the Yangtze River, Huaihe River and Yellow River, they are collectively called "Jianghuai Hehan". The Hanjiang River flows through Shaanxi and Hubei provinces and joins the Yangtze River at Longwang Temple in Hankou, Wuhan. The river length 1.577 km, and the basin area 1.959 years ago was 1.743 million square km, ranking first among all the basins in the Yangtze River system.

Brief introduction of Yugong mountain

A Mountain of Yugong is an allegorical prose in Liezi. The birthplace of this story is usually called Jiyuan, the hometown of Gong Yu. The article tells the story of Gong Yu's fearless and persistent digging of the mountain, which finally moved the Emperor of Heaven and moved the mountain away. Through the contrast between the persistence of a foolish old man and the cowardice of a wise man, and the contrast between "foolish old man" and "wisdom", this paper shows the confidence and perseverance of the working people in ancient China, and explains the reason that perseverance is needed to overcome difficulties.