# Concepts - [Line 2 (Xiamen Metro)](/en/concepts/xiamen-metro-line-2.html)：Line 2 (Xiamen Metro) is a metro line, opened on 25 December 2019, with 32 stations. - [Line 3 (Xiamen Metro)](/en/concepts/xiamen-metro-line-3.html)：Line 3 (Xiamen Metro) is a metro line, opened on 25 June 2021, with 31 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 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 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 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 (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 (Xi'an Metro)](/en/concepts/xian-metro-line-5.html)：Line 5 (Xi'an Metro) is a metro line, with 34 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 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. - [西安西咸新区智轨示范线1号线](/en/concepts/xian-metro-line-xixianxinquzhiguishifanxian1haoxian.html)：西安西咸新区智轨示范线1号线是一条地铁线路，设有4座车站。 - [Line 1 (Xuzhou Metro)](/en/concepts/xuzhou-metro-line-1.html)：Line 1 (Xuzhou Metro) is a metro line, opened on 28 September 2019, with 18 stations. - [Line 2 (Xuzhou Metro)](/en/concepts/xuzhou-metro-line-2.html)：Line 2 (Xuzhou Metro) is a metro line, opened on 28 November 2020, with 20 stations. - [Line 3 (Xuzhou Metro)](/en/concepts/xuzhou-metro-line-3.html)：Line 3 (Xuzhou Metro) is a metro line, opened on 28 June 2021, with 22 stations. - [Line 1 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-1.html)：Line 1 (Zhengzhou Metro) is a metro line, opened on 28 December 2013, with 30 stations. - [Line 10 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-10.html)：Line 10 (Zhengzhou Metro) is a metro line, opened on 28 September 2023, with 12 stations. - [Line 12 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-12.html)：Line 12 (Zhengzhou Metro) is a metro line, opened on 20 December 2023, with 11 stations. - [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 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-2.html)：Line 2 (Zhengzhou Metro) is a metro line, opened on 19 August 2016, with 22 stations. - [Line 3 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-3.html)：Line 3 (Zhengzhou Metro) is a metro line, opened on 26 December 2020, with 25 stations. - [Line 4 (Zhengzhou Metro)](/en/concepts/zhengzhou-metro-line-4.html)：Line 4 (Zhengzhou Metro) is a metro line, opened on 26 December 2020, with 27 stations. - [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. - [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. - [Zhengxu line](/en/concepts/zhengzhou-metro-line-zhengxuxian.html)：Zhengxu line is a metro line, opened on 28 December 2023, with 26 stations. - [民主](/en/concepts/democracy.html)：关于公共权力、参与和治理的政治概念，在不同历史语境中具有不同阐释。 - [新文学](/en/concepts/new-literature.html)：在中国近现代语境中，与文学革新及新的表达实践相关的文学概念。 - [Vernacular Chinese](/en/concepts/vernacular-chinese.html)：A written form grounded in spoken language, related to but distinct from classical Chinese. 第 7 / 7 页，共 330 条。 [上一页](/en/concepts-6.md?type=concept)