Line 2 is a major subway line in the Beijing Subway system, serving as a vital transportation route in Beijing, China. It runs in a circular shape, connecting various districts and key areas, including Dongcheng, Xicheng, and Chaoyang. The line is known for its efficiency and high passenger volume, making it one of the busiest lines in the network. Opened in 1984, Line 2 has undergone several expansions and upgrades to accommodate the growing population and urban development. It features multiple interchange stations, allowing passengers to transfer to other lines easily, enhancing overall connectivity within the city's public transport system.