# Concepts - [Line 5 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-5.html)：Line 5 (Zhengzhou Metro) is a loop metro line, opened on 20 May 2019, with 32 stations. - [Line 6 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-6.html)：Line 6 (Zhengzhou Metro) is a metro line, opened on 30 September 2022, with 28 stations. - [Line 4 (Suzhou Metro)](/en/concepts/suzhou-metro-line-4.html)：Line 4 (Suzhou Metro) is a metro line, opened on 15 April 2017, with 31 stations. - [Chengjiao line](/en/concepts/zhengzhou-metro-line-chengjiaoxian.html)：Chengjiao line is a metro line, opened on 12 January 2017, 31.7 km long, with 19 stations. - [香港屯马线](/en/concepts/hongkong-metro-line-tunmaxian.html)：香港屯马线是港铁运营的铁路线路，连接屯门站与乌溪沙站，现有27座车站。 - [香港将军澳线](/en/concepts/hongkong-metro-line-jiangjunaoxian.html)：香港将军澳线是港铁运营的铁路线路，连接北角、宝琳及康城，现有8座车站。 - [Line 1 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-1.html)：Line 1 (Hangzhou Metro) is a metro line, opened on 24 November 2012, 53.6 km long, with 33 stations. - [郑州地铁7号线](/en/concepts/zhengzhou-metro-line-7.html)：郑州地铁7号线一期于2024年12月29日开通运营。 - [郑州地铁8号线](/en/concepts/zhengzhou-metro-line-8.html)：郑州地铁8号线一期于2024年12月29日开通运营。 - [Line 14 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-14.html)：Line 14 (Zhengzhou Metro) is a metro line, opened on 19 September 2019, with 6 stations. - [Line 2 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-2.html)：Line 2 (Hangzhou Metro) is a metro line, opened on 24 November 2014, 43.3 km long, with 33 stations. - [Line 1 (Xi'an Metro)](/en/concepts/xian-metro-line-1.html)：Line 1 (Xi'an Metro) is a metro line, opened on 15 September 2013. - [Line 2 (Xi'an Metro)](/en/concepts/xian-metro-line-2.html)：Line 2 (Xi'an Metro) is a metro line, opened on 16 September 2011, with 25 stations. - [Line 3 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-3.html)：Line 3 (Hangzhou Metro) is a metro line, opened on 21 February 2022, with 37 stations. - [Line 3 (Xi'an Metro)](/en/concepts/xian-metro-line-3.html)：Line 3 (Xi'an Metro) is a metro line, opened on 8 November 2016, with 26 stations. - [Line 4 (Xi'an Metro)](/en/concepts/xian-metro-line-4.html)：Line 4 (Xi'an Metro) is a metro line, with 29 stations. - [Line 5 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-5.html)：Line 5 (Hangzhou Metro) is a metro line, opened on 24 June 2019, 56.8 km long, with 40 stations. - [Line 6 (Xi'an Metro)](/en/concepts/xian-metro-line-6.html)：Line 6 (Xi'an Metro) is a metro line, opened on 28 December 2020, with 32 stations. - [Line 6 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-6.html)：Line 6 (Hangzhou Metro) is a metro line, opened on 30 December 2020, 58.8 km long, with 33 stations. - [西安地铁8号线](/en/concepts/xian-metro-line-8.html)：西安地铁8号（环）线是西安首条地铁环线，2024年12月26日开通运行，线路长约50公里，设37座车站。 - [Line 10 (Xi'an Metro)](/en/concepts/xian-metro-line-10.html)：Line 10 (Xi'an Metro) is a metro line, opened on 26 September 2024, with 17 stations. - [Line 9 (Xi'an Metro)](/en/concepts/xian-metro-line-9.html)：Line 9 (Xi'an Metro) is a metro line, opened on 28 December 2020, with 15 stations. - [Line 7 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-7.html)：Line 7 (Hangzhou Metro) is a metro line, opened on 30 December 2020, with 24 stations. - [Line 9 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-9.html)：Line 9 (Hangzhou Metro) is a metro line, opened on 24 November 2012, 29.45 km long, with 21 stations. - [Line 6 (Guangzhou Metro)](/en/concepts/guangzhou-metro-line-6.html)：Line 6 (Guangzhou Metro) is a metro line, opened on 28 December 2013, 41.7 km long, with 32 stations. - [Line 5 (Xi'an Metro)](/en/concepts/xian-metro-line-5.html)：Line 5 (Xi'an Metro) is a metro line, with 34 stations. - [Line 14 (Xi'an Metro)](/en/concepts/xian-metro-line-14.html)：Line 14 (Xi'an Metro) is a metro line, opened on 29 June 2021, with 18 stations. - [Line 16 (Xi'an Metro)](/en/concepts/xian-metro-line-16.html)：Line 16 (Xi'an Metro) is a metro line, opened on 27 June 2023, with 9 stations. - [Line 10 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-10.html)：Line 10 (Hangzhou Metro) is a metro line, opened on 21 February 2022, with 12 stations. - [Line 16 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-16.html)：Line 16 (Hangzhou Metro) is a metro line, opened on 23 April 2020, 35.12 km long, with 12 stations. - [Line 19 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-19.html)：Line 19 (Hangzhou Metro) is a metro line, opened on 22 September 2022, 59 km long, with 18 stations. - [Line 1 (Harbin Metro)](/en/concepts/harbin-metro-line-1.html)：Line 1 (Harbin Metro) is a metro line, opened on 26 September 2013, 26.3 km long, with 23 stations. - [Line 2 (Harbin Metro)](/en/concepts/harbin-metro-line-2.html)：Line 2 (Harbin Metro) is a metro line, opened on 19 September 2021, 28.19 km long, with 19 stations. - [Line 3 (Harbin Metro)](/en/concepts/harbin-metro-line-3.html)：Line 3 (Harbin Metro) is a loop metro line, opened on 26 January 2017, 37.6 km long, with 36 stations. - [Line 4 (Hangzhou Metro)](/en/concepts/hangzhou-metro-line-4.html)：Line 4 (Hangzhou Metro) is a metro line, opened on 2 February 2015, 20.8 km long, with 33 stations. - [杭州杭海城际铁路](/en/concepts/hangzhou-metro-line-hanghaichengjitielu.html)：杭海城际铁路连接临平南高铁站与浙大国际校区站，2021年6月28日开通初期运营。 - [Line 1 (Nanjing Metro)](/en/concepts/nanjing-metro-line-1.html)：Line 1 (Nanjing Metro) is a metro line, opened on 3 September 2005, with 32 stations. - [Line 2 (Nanjing Metro)](/en/concepts/nanjing-metro-line-2.html)：Line 2 (Nanjing Metro) is a metro line, opened on 28 May 2010, with 30 stations. - [Line 1 (Lanzhou Metro)](/en/concepts/lanzhou-metro-line-1.html)：Line 1 (Lanzhou Metro) is a metro line, opened on 23 June 2019, with 24 stations. - [Line 5 (Nanjing Metro)](/en/concepts/nanjing-metro-line-5.html)：Line 5 (Nanjing Metro) is a metro line, opened on 31 March 2024, with 30 stations. - [Line 2 (Lanzhou Metro)](/en/concepts/lanzhou-metro-line-2.html)：Line 2 (Lanzhou Metro) is a metro line, opened on 29 June 2023, with 9 stations. - [Line 4 (Nanjing Metro)](/en/concepts/nanjing-metro-line-4.html)：Line 4 (Nanjing Metro) is a metro line, opened on 18 January 2017, with 18 stations. - [Line 3 (Nanjing Metro)](/en/concepts/nanjing-metro-line-3.html)：Line 3 (Nanjing Metro) is a metro line, opened on 1 April 2015, with 31 stations. - [Line 1 (Ningbo Rail Transit)](/en/concepts/ningbo-metro-line-1.html)：Line 1 (Ningbo Rail Transit) is a metro line, opened on 30 May 2014, with 29 stations. - [Line 3 (Ningbo Rail Transit)](/en/concepts/ningbo-metro-line-3.html)：Line 3 (Ningbo Rail Transit) is a metro line, opened on 30 June 2019. - [Line 4 (Ningbo Rail Transit)](/en/concepts/ningbo-metro-line-4.html)：Line 4 (Ningbo Rail Transit) is a metro line, opened on 23 December 2020, with 27 stations. - [Line 5 (Ningbo Rail Transit)](/en/concepts/ningbo-metro-line-5.html)：Line 5 (Ningbo Rail Transit) is a metro line, opened on 28 December 2021. - [Line 10 (Nanjing Metro)](/en/concepts/nanjing-metro-line-10.html)：Line 10 (Nanjing Metro) is a metro line, opened on 1 July 2014, with 24 stations. - [Line 7 (Nanjing Metro)](/en/concepts/nanjing-metro-line-7.html)：Line 7 (Nanjing Metro) is a metro line, with 27 stations. - [南京地铁6号线](/en/concepts/nanjing-metro-line-6.html)：南京地铁6号线连接栖霞山与南京南站，在南京南站与S1号线贯通运营。 第 28 / 29 页，共 1434 条。 [上一页](/en/concepts-27.md?type=concept) [下一页](/en/concepts-29.md?type=concept)