Tongmai Tiansheng is known as the Tongmai Cemetery and is the most dangerous section of the Sichuan-Tibet line. between Bomi and Bayi, with a total length of 14 kilometers, this road takes an average of three hours. Known as "the world's second largest mudslide group" " Sichuan is difficult, it is difficult to go to the West." Walking along the southern Sichuan-Tibet line, the mountainous soil along the line is relatively loose, and there are snow-capped mountains and rivers nearby. When the wind and rain or snow and ice melt, it is easy to cause mudslides and landslides. Therefore, Tongmai Tiansheng has the name of death section Luck is not good! Also encountered a landslide, from 9:00 am to 4 pm... The long queue of cars is expected to be released at night.