The Chengyu Ring Expressway (simplified Chinese: 成渝环线高速; traditional Chinese: 成渝環線高速), officially the Chengyu Region Ring Expressway (simplified Chinese: 成渝地区环线高速公路; traditional Chinese: 成渝地區環線高速公路) and designated G93,[2] is an expressway encircling the cities of Chongqing and Chengdu, Sichuan, in China.
When complete, it will be 1,057 km (657 mi) in length.
The highway is named using the one-character abbreviations cheng and yu, for Chengdu and Chongqing respectively.
Clockwise from Chengdu, the expressway connects the following cities: Currently, sections from Mianyang to Ya'an through Chengdu and from Suining to Chongqing are complete.
Note: italic indicates the routes that were available in 2013 network plan, but removed in 2022 network plan