The main highways to Tibet are the Chengdu-Lhasa,2,330 kilometers long; the Xining-Golmud-Lhasa, 1,907 kilometers long. The average elevation of theis highway is above 4,000 meters, running through the mountains of Kunlun and Tanggula;the Yecheng-Burang, 1,455 kilometers. This highway is the highest highway in the world, passing through five mountains above 5,000 meters high. The highest mountain is 6,035 meters above sea level; the Xiaguan- Markam,800 kilmetrs long; Lhasa-Zhamud Friendship Bridge-Kathmandu, 900 kilometers. Every day, two buses shuttle between germu and Lhasa. They start from germu at eight in the morning and arrive in Lhasa the next afternoon. The detailed information is listed as followings: