Introduction to Heilong Gorge: It is located at the west end of the Grand Canyon, with a total distance of about 10 kilometers. The canyon is narrow and long. The water in the valley flows turbulently in the stone troughs and swirls in the stone pools. Under the refraction of the sun, it sparkles like golden beads. Known as the Black Dragon Gorge section of Jinsi Gorge, it can be said to be extremely dangerous and extremely beautiful.