Nansan Transnational Caves in Zhenkang County, Linyi City, Yunnan Province are not open at all, and they are not allowed to enter the cave casually. Transnational caves are not included in tourist attractions and are not developed and opened to the outside world! The cross-country cave is located near the 125 boundary monument of the border between China and Myanmar, defended by border guards and local police, and is prohibited from entering the cave! Attach three photos of the South Umbrella!