Summary：Beijing will further expand its subway system with the opening of three new lines on Saturday ​

The two high-tech lines and one conventional tram will bring the number of lines in the capital to 22, covering a total of 608 kilometers, the Beijing Commission of Transport said.

The 10.2-km S1 Line will be Beijing's first mid-to low-speed Maglev line, and has a top speed of 100 km/h. It will link the city's western districts of Mentougou and Shijingshan, and passengers can ride the entire line in less than 20 minutes.