Ningjin has the legend of Wo Niucheng. It is said that Taishang Laojun had a sacred bull on his mount. Sifan went down to the human world and saw the vast land of Ningjin. The river was like a silver belt. There was a highland on the south bank of the river with vast smoke and clouds, lingering purple air, green trees, fertile grass and beautiful water. The feng shui is excellent, so I often come here to rest on the ground. It is commonly known as Woniugang among the people. During the Jin Dynasty, the original Linjin County was flooded and the county seat was moved 12.5 kilometers eastward, so this post was selected. The county government office was first built, and a city was built in the Ming Dynasty, which was called Woniu City.