中国地铁第一城，悬念再起

Core Insights - The competition among major Chinese cities in subway construction is intensifying, with Beijing and Shanghai vying for the top position, while Guangzhou and Chengdu are closely following [2][20][21] Group 1: Subway Mileage Updates - By the end of this year, Beijing's subway mileage is expected to reach 909 kilometers, surpassing Shanghai's approximately 900 kilometers, marking a shift in the title of China's subway capital [2][20][27] - Chengdu has emerged as the growth leader this year, adding 87.5 kilometers to its subway network, bringing its total to 758 kilometers, narrowing the gap with Guangzhou to just 22 kilometers [2][20][29] - Nanjing's subway has also made significant progress, reaching 525 kilometers this year, overtaking Hangzhou [21][31] Group 2: 500-Kilometer Club - A remarkable statistic indicates that nine cities in mainland China have surpassed 500 kilometers of subway mileage, including Beijing, Shanghai, Guangzhou, Chengdu, Shenzhen, Wuhan, Nanjing, Hangzhou, and Chongqing [5][23][25] - Both Beijing and Shanghai are projected to exceed 900 kilometers by the end of this year, while Guangzhou and Chengdu are expected to surpass 700 kilometers, intensifying competition in the second tier [5][23][25] Group 3: Competitive Dynamics - The competition between Beijing and Shanghai is characterized by rapid developments, with both cities planning to open new lines by the end of the year to boost their respective mileages [27][28] - Guangzhou's subway construction remains strong, with an expected addition of approximately 75.4 kilometers this year, while Chengdu's growth is more pronounced, with a total of 87.5 kilometers added [11][28][29] - Nanjing's recent advancements have allowed it to surpass Hangzhou, although Hangzhou has multiple lines under construction that could restore its position in the future [31]