The Roof of the World is also called "Forbidden Zone of Life" and on this high plateau, there is a petroleum pipeline from Golmud to Lhasa covering 1080 km. Golmud-Lhasa Petroleum Pipeline undertakes almost all the transporting of petroleum of Tibet.

Yao Zhixiang, a protector along Golmud-Lhasa Petroleum Pipeline and he has spent 28 years in protecting this pipeline. During these 28 years, he has passed through the forbidden zone of Ke Ke Xi Li for over 230 times, climbed over the Tangula Mountain for many times and covered more than 520 thousand km at the altitude of 4500 meters. Yao is praised as the excellent individual by our country.