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Chengjiao line of the Zhengzhou Metro (), planned to be part of Line 9 in the future, is a 
rapid transit
Rapid transit or mass rapid transit (MRT) or heavy rail, commonly referred to as metro, is a type of high-capacity public transport that is generally built in urban areas. A grade separation, grade separated rapid transit line below ground su ...
line in Zhengzhou
Zhengzhou is the capital of Henan, China. Located in northern Henan, it is one of the nine National central city, national central cities in China, and serves as the political, economic, technological, and educational center of the province. Th ...
. It was opened on 12 January 2017. This line is long with 19 stations (16 stations in operation).
Through services are operated on Line 2 and Chengjiao line, although they are classified as separate lines.
Opening timeline
Stations
References
{{Central Henan transit Chengjiao line, Zhengzhou Metro Railway lines opened in 2017 2017 establishments in China Airport rail links in China Zhengzhou Metro lines