A renovation project on Beijing's east sixth ring road was opened to traffic upon full completion on April, 20. The renovated section is about 16.3 kilometers in length, including a 7.4-kilometer-long shield tunnel. The project helps improve expressway transport across the core area of Beijing's sub-center Tongzhou District.

This photo taken on April 20, 2025 shows a shield tunnel along the east sixth ring road in Beijing, capital of China. [China Railway 14th Bureau Group Co., Ltd./Handout via Xinhua]

A vehicle runs inside a shield tunnel along the east sixth ring road in Beijing, capital of China, April 20, 2025.
[China Railway 14th Bureau Group Co., Ltd./Handout via Xinhua]

A vehicle runs inside a shield tunnel along the east sixth ring road in Beijing, capital of China, April 20, 2025. 
[China Railway 14th Bureau Group Co., Ltd./Handout via Xinhua]

Technicians patrol inside the emergency access of a shield tunnel along the east sixth ring road in Beijing, capital of China, April 20, 2025. 
[China Railway 14th Bureau Group Co., Ltd./Handout via Xinhua]

This photo taken on April 20, 2025 shows the portals at one end of a shield tunnel along the east sixth ring road in Beijing, capital of China.
[China Railway 14th Bureau Group Co., Ltd./Handout via Xinhua]

Constructors pose for a group photo in front of the portals at one end of a shield tunnel along the east sixth ring road in Beijing, capital of China, April 20, 2025.
[China Railway 14th Bureau Group Co., Ltd./Handout via Xinhua]