Meishan, Danxia landform, located in Mianxi River Grand Canyon of Qidonggou tourist scenic spot, with a forest coverage rate of 96%. The content of negative oxygen ions per cubic centimeter in the air is as high as 47,000, and there are many mountain streams and waterfalls, among which the national protected plants spinulosa and nanmu are scattered all over the place. Nearby, there are scenic spots such as Qidong Cliff Tomb, Nanmu Ancient Temple Quanfei Temple in the Eastern Han Dynasty, Haiyun Glass Bridge and so on. Meishan, located in Qidonggou, Sichuan, is named after Qingshan silkworm.

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Meishan is located in Qidonggou Scenic Area, in the middle of a platform with an area of nearly 100 square kilometers and a width of more than 10 kilometers. This platform reaches Hejiang County, Luzhou City, jiangjin district City, Chongqing City in the northeast, and Folai Mountain, Kaifo Town, Changning County, Yibin City in the southwest. Mianxi River crosses the platform, forming Mianxi River Grand Canyon. According to the principle of aerodynamics, hot air rises, cold air sinks, and the cold air on the platform sinks continuously, gathering into Mianxi River Grand Canyon, which keeps the temperature at a low level and becomes a natural large-scale air conditioner and an excellent summer resort. In summer, the temperature in the scenic spot is only 20 degrees, which is extremely cool.