Introduction to Black Tiger Spring: Black Tiger Spring is the crown of the spring group. It is located at the foot of the western end of Peiwei Mountain and belongs to the northern area of the spring group. The spring is as big as a tiger's mouth and erupts from the black hole. Like an object galloping or a tiger roaring, the water surges and the sound shakes thousands of forests, hence the name "Black Tiger Spring". Zhang Zheng, the imperial censor of Hedu in the Ming Dynasty, wrote the poem "Black Tiger Spring" in praise of: "When the mind travels to the end, the Tao body recognizes the source. The leakage sometimes runs out, and the source never rests. The black tiger wins, cooperates with the jade rainbow flow "There are many famous places in Zhusi, and it will be a wonderful journey back to the east."