Chengdu City, capital of southwest China's Sichuan Province, opened five new 
metro lines on Dec. 18, 2020, bringing the number of metro lines in the city to 
13, according to Chengdu Municipal People's Government.

The new lines have brought the total length of Chengdu's far-reaching metro 
system to 558 km, made Chengdu the "fourth city" of urban rail transportation 
in China.

Line 6, the first phases of lines 8, 9 and 17, as well as the eastern section 
of Line 18 have been opened.

Line 18 links Chengdu's city proper with its new airport, the Chengdu Tianfu 
International Airport, which is slated to begin operations next year. The 
Tianfu International Airport will position Chengdu as the third city in the 
Chinese mainland behind Beijing and Shanghai to possess two of its own 
international airports.

An automated train system has been deployed on Line 9. Trains on the line can 
automatically run, stop, turn on, and carry out inspections.

The Chengdu Metro launched its first line, Line 1, in 2010. So far, it has 
transported more than 6 billion passengers, with the average daily number of 
passengers exceeding 4 million.

Source: Chengdu Municipal People's Government