Shenhai Well is at the foot of Ruanjiaba Mountain in the Da'an District of Zigong City. It is the "living fossil" of well salt production using the traditional method and a symbol of the maturity of ancient Chinese drilling technology. Shenhai Well has been excavated since the third year of Daoguang in the Qing Dynasty. It has an amazing depth and a long history. Walking in the scenic area, you can see the masters boiling and carrying salt using traditional methods, recalling the great wisdom of the ancients.