National highways of China
The China National Highways (CNH/Guodao) (simplified Chinese: 中华人民共和国国道; traditional Chinese: 中華人民共和國國道; pinyin: Zhōnghuá Rénmín Gònghéguó Guódào) is a network of trunk roads across mainland China. Established to facilitate transportation and economic development, the system includes north–south and east–west arterial highways, expressways, and local roads.
Source: Wikipedia — National highways of China (CC BY-SA 4.0)