China National Highway 320 (G320) runs southwest from Shanghai through the provinces of Zhejiang, Jiangxi, Hunan and Guizhou before ending in Ruili, Yunnan at the Sino–Burmese border.

[1] China National Highway 112 runs around Beijing Before 2013, Mainland China observed National Highway 228 as Taiwan Ring, composed of several National Expressway (Republic of China) and Taiwan provincial highways, this designation is not recognized by Republic of China (Taiwan).

This observation was eventually dropped in new National Highway plans, replaced by Dandong-Dongxing Highway.

A extension plan of the highway system was announced in 2013, including extension of existing highways(101-112, 201-227, 301-330) and new highways (North-South 228-248, East-West 331-361, Connections 501-581).

Another extension plan was announced in 2022, including new small purpose connection highways (601-701).