Core Points - The Beijing Subway Line 8's Dahongmen Station officially opened on November 8, enabling bidirectional transfer with Line 10, marking the full connectivity of this north-south "underground central axis" line [1][2] Group 1: Infrastructure and Connectivity - Beijing Subway Line 8 is a key line in the city's rail transit network, stretching from Zhuxinzhuang Station in Changping District to Yinhai Station in Daxing District, with a total of 35 stations [2] - The line passes through significant areas such as Olympic Park, Shichahai, Qianmen, and Tianqiao, aligning closely with the city's central axis [2] - The opening of Dahongmen Station resolves the operational bottleneck of transferring to Line 10, providing efficient travel options for passengers between central Beijing and southern districts like Fengtai and Daxing [2] Group 2: Service Enhancements - The station features clear directional signage, a well-organized ticket gate layout, and comprehensive customer service and accessibility facilities, indicating an upgrade in operational services [4] - Initial operations include a "Light Up New Coordinates" event, offering exclusive service desks and free postcards as souvenirs for passengers [4] - Currently, three additional subway lines (Line 17 mid-section, Line 6 south extension, and Line 18) are undergoing closed-loop simulation operations, with plans to exceed 900 kilometers of operational rail transit upon their opening [4]

Core Points - The Beijing Subway Line 8's Dahongmen Station officially opened on November 8, allowing for bidirectional transfer with Line 10, enhancing travel efficiency for citizens along the route [1][2] - Line 8 is a key component of Beijing's rail transit network, stretching from Zhu Xinzhuang in Changping to Yinghai in Daxing, featuring 35 stations and connecting major urban areas [2][3] - The opening of Dahongmen Station resolves the previous transfer bottleneck, providing a more efficient travel option for residents commuting between central urban areas and southern districts [2][3] Infrastructure Improvements - Dahongmen Station employs an "underground transfer + comprehensive connection" model, allowing passengers to switch between Line 8 and Line 10 without exiting the station [4] - The C entrance has been expanded southward, with the addition of escalators, accessible elevators, and wider passageways to enhance passenger experience [4]

Core Points - By the end of 2024, Beijing will have 29 operational subway lines, totaling 879 kilometers in length and featuring 522 stations, including 98 transfer stations [1] - The first subway line, Line 1, was opened on October 1, 1969, and the network has expanded significantly over the past 55 years [1][2] - The 3rd and 12th subway lines are set to open on December 15, 2024, marking the addition of the 28th and 29th lines to the network [1][30][31] - The 18th line, a result of the expansion of Line 13, is expected to open by the end of this year, bringing the total to 30 lines [1] Summary by Line - **Line 1**: Opened on October 1, 1969, initially not open to the public until January 15, 1971, and officially operational on September 15, 1981 [2] - **Line 2**: Opened on September 20, 1984, as the first circular subway line in China [3] - **Line 13**: Opened its western section on September 28, 2002, and the eastern section on January 28, 2003 [4] - **Line 5**: Fully operational since October 7, 2007, serving as a major north-south transit line [6] - **Line 10**: Opened on July 19, 2008, and is currently the busiest line in the system [7] - **Capital Airport Line**: Opened on July 19, 2008, connecting the city to the international airport [9] - **Line 8**: Opened to the public on October 9, 2008, after initially serving the Olympics [10] - **Line 4**: Opened on September 28, 2009, and is operated by the MTR Corporation [11] - **Daxing Line**: Opened on December 30, 2010, and connects with Line 4 [12] - **Yizhuang Line**: Opened on December 30, 2010, with further extensions in subsequent years [13] - **Fangshan Line**: Opened its first section on December 30, 2010, with additional sections opened in later years [14] - **Changping Line**: Opened on December 30, 2010, and has seen multiple extensions since [15] - **Line 15**: Opened its first section on December 30, 2010, with further expansions in 2011 and 2014 [16] - **Line 9**: Opened its southern section on December 31, 2011, with further extensions in subsequent years [17] - **Line 6**: Opened on December 30, 2012, with additional sections opened in 2014 and 2018 [18] - **Line 14**: Opened its western section on May 5, 2013, with further expansions in the following years [19] - **Line 7**: Opened on December 28, 2014, and has been extended to serve new areas [20] - **Line 16**: Opened its northern section on December 31, 2016, with ongoing expansions planned [21] - **Xijiao Line**: Opened on December 30, 2017, connecting various parks and attractions [22] - **S1 Line**: Opened its first section on December 30, 2017, and completed the remaining section in 2021 [23] - **Yanqing Line**: Opened on December 30, 2017, as the first fully automated subway line in China [24] - **Daxing Airport Line**: Opened on September 26, 2019, serving the new airport [25] - **Yizhuang T1 Line**: Opened on December 31, 2020, with separate ticketing [26] - **Line 17**: Opened its southern section on December 31, 2021, with plans for full connectivity by 2025 [27] - **Line 19**: Opened its first section on December 31, 2021, with additional stations opened in July 2022 [28] - **Line 11**: Opened its western section on December 31, 2021, with further sections planned for December 2023 [29] - **Line 3**: Scheduled to open on December 15, 2024, completing its first phase [30] - **Line 12**: Also set to open on December 15, 2024, primarily running along the North Third Ring Road [31]