BEIJING, Dec. 26 (Xinhua) -- The Qinghai-Xizang Plateau, often referred to as the "roof of the world," was once considered so inaccessible that "only the mighty eagles of the plateau could fly over."
However, more than 70 years ago, under the leadership of the Communist Party of China, this began to change as the construction of two monumental highways -- the Sichuan-Xizang and Qinghai-Xizang routes -- kicked of
