China National Highway 212 (G212) runs from Lanzhou in Gansu to Chongqing. It was originally 1302 kilometres in length. In the 2013 National Highway Network Planning it was extended to Longbang, Guangxi, on the border with Vietnam. After the extension, the length is circa 2,300 km (1,400 mi).[1]
Between Lanzhou and the junction at Huichuan Town (35 or so km south of Lintao), G212 is concurrent with China National Highway 316.
This section needs to be updated. The reason given is: Missing extension to Longbang. Please help update this article to reflect recent events or newly available information.(June 2021)
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). Only small portions of them needs to be constructed from scratch; most of the new highways would be upgraded provincial/county highways.
Another extension plan was announced in 2022, including new small purpose connection highways (601-701).