The document summarizes 10 of China's most beautiful highways:
1. The Hangzhou Bay Bridge is the world's longest trans-oceanic bridge at 36 km long.
2. China has 6 hanging cliff-side highways built into mountainsides, including the famous Guoliang Highway.
3. The Zhongnanshan Highway Tunnel in Qinling Mountains is the world's longest double-tube highway tunnel at 36.04 km long.
4. The Aizhai Highway in Hunan Province has 13 turns winding up the mountainside.
5. The Aizhai Bridge in Hunan spans 1,176m making it the world's 3rd longest and Asia's