There is no Weihe County in China, but there is Weihe River, which is located in Shaanxi Province. Weihe River, called Weishui in ancient times, originated from Bird and Mouse Mountain in Weiyuan County, Gansu Province. Its main stream flows through Gansu and Shaanxi provinces from west to east, like a dragon flying with its head held high, and it joins the Yellow River in Tongguan County, Weinan City, with a total length of 8 18 km, which is the longest tributary of the Yellow River. There is an east-west Qinling Mountains on both sides of the Weihe River, and a Liupanshan barrier in the north. Weihe river basin can be divided into loess hilly and gully region in the west and Guanzhong plain region in the east.

Historically, Weihe River shipping has been developed and utilized. During the Zhou and Qin Dynasties, shipping on the Weihe River had already begun. In 647 BC, there was a drought in the state of Jin, and Qin helped the state of Jin with a large amount of grain, "turning the boat to the east and facing the river forever." The water transport route goes down the Weihe River, up the Yellow River, down Fenshui River and up to Jindujiang River, which shows that there is more water in the middle and lower reaches of Weihe River, which is beneficial to shipping.

Chang 'an, the capital of Han and Tang Dynasties, needs to transport hundreds of thousands or even hundreds of stones of grain to Chang 'an through Weihe River every year. The grain carrier on the Weihe River can carry six or seven hundred stones, and the military ships in the war years are constantly coming and going. For example, in the Battle of Qin after Emperor Wu of Song's felling, Wang Zhene led the water army, went up the Wei River in a small Meng Chong boat, landed at the Wei River Bridge, and conquered Chang 'an in one fell swoop.

At the end of Tang Dynasty, the capital was moved to Luoyang, and the Weihe River declined by water transport. After the middle of the Qing Dynasty, the Weihe River was basically navigable. Only when there is a lot of water in summer and autumn can small wooden boats pass through some downstream reaches, which shows that the water volume of Weihe River has changed greatly.