Changlinggou, located in Shenjiazhai, Xining City, is an important part of the greening project of the north and south of Xining. If the north and south mountains are two green barriers in Xining City, carrying the hope of Xiadu people to build beautiful homes, then the greening of Changlinggou has concentrated the essence of the province's science and technology to control soil erosion. From the west mountain lane into the "Puning Pearl" tower, then along the east side of the winding mountain path on the road, up a road slope, up a road, the road on the mountain beam, nine turns eighteen bends, along the steep hillside all the way up. On the beams and sidewalks, pink scorpion leaves, white apricots, goose yellow forsythia and other flower shrubs compete for the glory; on the hillsides, in the valleys, the upright poplar trees, the winding water willow, the cold pine cypress bloom new green...