Yin River, as its name implies, is a hidden river, an underground river. It is called a river, and it is naturally a flowing river flowing underground. If you run into an underground river, the water will never be exhausted. But if it is not an easy-to-find underground river, it will be hidden underground for many years. If it is dug out suddenly, it is likely to gush out of the ground, posing a danger to crops and people on the ground.
However, the "Yin River" does exist. In an extremely arid area like Xinjiang, underground rivers are sometimes found inadvertently. 20 13, went to a county town in Linyi, Shandong Province to find comrades. I happened to meet the local people near a wellhead where water kept gushing. The water in the well kept pouring out and even formed a stream on the ground. I didn't know until I walked in It turned out that the locals dug wells and dug underground rivers. Some people say that this underground river must be connected with the Grand Canyon underground river in the distance, and we must find ways to keep the water from gushing. It was then that I realized that there really was an underground river.
However, underground rivers are really not easy to find, and they are often discovered by accident through exploration. For example, drilling wells in rural areas just hits the underground river, which is really inexhaustible. But some underground rivers are deeply influenced by acid-base lava, and the water is really not suitable for drinking and irrigation. Don't think it's a good thing to dig wells and rivers. Therefore, the underground river, that is, the "Yin River" as the old farmer said, does exist.