# Concepts - [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 1 (Hefei Metro)](/en/concepts/hefei-metro-line-1.html)：Line 1 (Hefei Metro) is a metro line, opened on 26 December 2016, 29.06 km long, with 26 stations. - [Line 2 (Hefei Metro)](/en/concepts/hefei-metro-line-2.html)：Line 2 (Hefei Metro) is a metro line, opened on 26 December 2017, 30.06 km long, with 35 stations. - [Line 3 (Hefei Metro)](/en/concepts/hefei-metro-line-3.html)：Line 3 (Hefei Metro) is a metro line, opened on 26 December 2019, with 40 stations. - [Line 4 (Hefei Metro)](/en/concepts/hefei-metro-line-4.html)：Line 4 (Hefei Metro) is a metro line, opened on 26 December 2021, with 34 stations. - [Line 5 (Hefei Metro)](/en/concepts/hefei-metro-line-5.html)：Line 5 (Hefei Metro) is a metro line, opened on 26 December 2020, with 33 stations. - [Line 8 (Hefei Metro)](/en/concepts/hefei-metro-line-8.html)：Line 8 (Hefei Metro) is a metro line, opened on 26 December 2024, with 12 stations. - [Line 1 (Hohhot Metro)](/en/concepts/hohhot-metro-line-1.html)：Line 1 (Hohhot Metro) is a metro line, opened on 29 December 2019, 21.72 km long, with 20 stations. - [Line 2 (Hohhot Metro)](/en/concepts/hohhot-metro-line-2.html)：Line 2 (Hohhot Metro) is a metro line, opened on 1 October 2020, 27.31 km long, with 24 stations. - [香港迪士尼线](/en/concepts/hongkong-metro-line-dishinixian.html)：香港迪士尼线是一条地铁线路，设有2座车站。 - [香港东铁线](/en/concepts/hongkong-metro-line-dongtiexian.html)：香港东铁线是一条地铁线路，设有15座车站。 - [香港东涌线](/en/concepts/hongkong-metro-line-dongyongxian.html)：香港东涌线是一条地铁线路，设有8座车站。 - [香港港岛线](/en/concepts/hongkong-metro-line-gangdaoxian.html)：香港港岛线是一条地铁线路，设有17座车站。 - [香港观塘线](/en/concepts/hongkong-metro-line-guantangxian.html)：香港观塘线是一条地铁线路，设有17座车站。 - [香港将军澳线](/en/concepts/hongkong-metro-line-jiangjunaoxian.html)：香港将军澳线是一条地铁线路，设有8座车站。 - [香港机场快线](/en/concepts/hongkong-metro-line-jichangkuaixian.html)：香港机场快线是一条地铁线路，设有5座车站。 - [香港南港岛线](/en/concepts/hongkong-metro-line-nangangdaoxian.html)：香港南港岛线是一条地铁线路，设有5座车站。 - [香港荃湾线](/en/concepts/hongkong-metro-line-quanwanxian.html)：香港荃湾线是一条地铁线路，设有16座车站。 - [香港屯马线](/en/concepts/hongkong-metro-line-tunmaxian.html)：香港屯马线是一条地铁线路，设有27座车站。 - [Line 1 (Jinan Metro)](/en/concepts/jinan-metro-line-1.html)：Line 1 (Jinan Metro) is a metro line, opened on 1 April 2019, 26.27 km long, with 11 stations. - [Line 2 (Jinan Metro)](/en/concepts/jinan-metro-line-2.html)：Line 2 (Jinan Metro) is a metro line, 36.39 km long, with 19 stations. - [Line 3 (Jinan Metro)](/en/concepts/jinan-metro-line-3.html)：Line 3 (Jinan Metro) is a metro line, opened on 28 December 2019, 21.59 km long, with 18 stations. - [Line 1 (Kunming Metro)](/en/concepts/kunming-metro-line-1.html)：Line 1 (Kunming Metro) is a metro line, opened on 20 May 2013, with 22 stations. - [Line 2 (Kunming Metro)](/en/concepts/kunming-metro-line-2.html)：Line 2 (Kunming Metro) is a metro line, with 22 stations. - [Line 3 (Kunming Metro)](/en/concepts/kunming-metro-line-3.html)：Line 3 (Kunming Metro) is a metro line, opened on 29 August 2017, with 20 stations. - [Line 4 (Kunming Metro)](/en/concepts/kunming-metro-line-4.html)：Line 4 (Kunming Metro) is a metro line, opened on 23 September 2020, with 29 stations. - [Line 5 (Kunming Metro)](/en/concepts/kunming-metro-line-5.html)：Line 5 (Kunming Metro) is a metro line, with 22 stations. - [Line 6 (Kunming Metro)](/en/concepts/kunming-metro-line-6.html)：Line 6 (Kunming Metro) is a metro line, opened on 28 June 2012, with 8 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 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 1 (Luoyang Subway)](/en/concepts/luoyang-metro-line-1.html)：Line 1 (Luoyang Subway) is a metro line, opened on 28 March 2021, with 19 stations. - [Line 2 (Luoyang Subway)](/en/concepts/luoyang-metro-line-2.html)：Line 2 (Luoyang Subway) is a metro line, with 15 stations. - [Line 1 (Nanchang Metro)](/en/concepts/nanchang-metro-line-1.html)：Line 1 (Nanchang Metro) is a metro line, opened on 26 December 2015, 28.74 km long, with 34 stations. - [Line 2 (Nanchang Metro)](/en/concepts/nanchang-metro-line-2.html)：Line 2 (Nanchang Metro) is a metro line, opened on 18 August 2017, 23.3 km long, with 37 stations. - [Line 3 (Nanchang Metro)](/en/concepts/nanchang-metro-line-3.html)：Line 3 (Nanchang Metro) is a metro line, 28.5 km long, with 22 stations. - [Line 4 (Nanchang Metro)](/en/concepts/nanchang-metro-line-4.html)：Line 4 (Nanchang Metro) is a metro line, 40 km long, with 29 stations. - [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 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 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 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 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 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 7 (Nanjing Metro)](/en/concepts/nanjing-metro-line-7.html)：Line 7 (Nanjing Metro) is a metro line, with 27 stations. - [Line S1 (Nanjing Metro)](/en/concepts/nanjing-metro-line-dities1haoxian.html)：Line S1 (Nanjing Metro) is a metro line, opened on 1 July 2014, with 9 stations. - [Line S3 (Nanjing Metro)](/en/concepts/nanjing-metro-line-dities3haoxian.html)：Line S3 (Nanjing Metro) is a metro line, opened on 6 December 2017, with 19 stations. - [Line S6 (Nanjing Metro)](/en/concepts/nanjing-metro-line-dities6haoxian.html)：Line S6 (Nanjing Metro) is a metro line, opened on 28 December 2021, with 13 stations. - [Line S7 (Nanjing Metro)](/en/concepts/nanjing-metro-line-dities7haoxian.html)：Line S7 (Nanjing Metro) is a metro line, opened on 26 May 2018, 30.82 km long, with 9 stations. - [Line S8 (Nanjing Metro)](/en/concepts/nanjing-metro-line-dities8haoxian.html)：Line S8 (Nanjing Metro) is a metro line, opened on 1 August 2014, with 19 stations. - [Line S9 (Nanjing Metro)](/en/concepts/nanjing-metro-line-dities9haoxian.html)：Line S9 (Nanjing Metro) is a metro line, opened on 30 December 2017, 52.39 km long, with 6 stations. - [南京河西有轨电车1号线](/en/concepts/nanjing-metro-line-hexiyouguidianche1haoxian.html)：南京河西有轨电车1号线是一条地铁线路，设有13座车站。 第 4 / 7 页，共 330 条。 [上一页](/en/concepts-3.md?type=concept) [下一页](/en/concepts-5.md?type=concept)