Line 4 is an east-west line on the Nanjing Metro, running from Xianlinhu to Longjiang. It consists of 18 stations and spans a total of 33.75 km (20.97 mi). The line color is purple, and it first opened on January 18, 2017.
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The second phase of the line will extended it to Zhenzhuquandong station.[3][4] A further extension to Yujiaying is under planning.
References
^南京地铁4号线主城“横贯线” 连创多个第一 [Metro Line 4, central city's "east-west line" achieves multiple firsts] (in Chinese). Nanjing Daily News. January 18, 2017. Archived from the original on January 26, 2017. Retrieved January 18, 2017.
^南京地铁4号线开通试运营. chinanews.com (in Chinese). 18 January 2017. Retrieved December 31, 2017.