Passengers pose for photos at Chaoyang Station of Subway Line 3 in Beijing, capital of China, Dec 15, 2024. [Photo/Xinhua] Notably, the first phase of Line 3, which includes (passes) Chaoyang ...

As three new subway lines were put into operation on Sunday, Beijing's urban rail transit network has expanded to a total length of 879 kilometers, making it the longest in China, authorities said.