Mengzi is definitely the most potential city in the Red River. At first, you can feel its vibrant breath. As for tourist attractions, there are three places: Longbao Cave: Wulichong Reservoir, 20 kilometers south of Mengzi County. This limestone cave is about 500 meters deep and consists of three halls. The scenery in the cave is breathtaking, with both solidified stone waterfalls and frozen stone terraces. It is an ideal tourist destination in Mengzi. Meng Man Ancient Road: Meng Man Ancient Road (Mengzi to Manhao in Gejiu City) is an ancient means of transportation from southern Yunnan to Vietnam. Maludong Paleolithic Site: At the foot of Huangjiashan Mountain, 7 kilometers south of Mengzi County, it is a paleolithic cave site. The cave faces east and west. I think the most interesting place of the Red River is the mouth of the river in summer, and then water is produced in four seasons.