Line 3, Guangzhou Metro

Line 3 of the Guangzhou Metro (Chinese: 广州地铁3号线; pinyin: Guǎngzhōu Dìtiě Sān Hào Xiàn) or Southern-Northern Express Line (Chinese: 南北快线; pinyin: Nán Běi Kuài Xiàn) is a 67.3-kilometer (41.8 mi) line connecting Panyu Square to Tianhe Coach Terminal. The entire line, including all track and stations, is underground, making it the longest fully underground rapid transit line in the system. Furthermore, the 60.4 km (37.5 mi) main branch is the longest rail tunnel in the world, and one of the ten longest tunnels of any kind. The Y-shape is created by a 6.9 km (4.3 mi) branch between Tianhe Coach Terminal and Tiyu Xilu,

Line 3, Guangzhou Metro

Line 3 of the Guangzhou Metro (Chinese: 广州地铁3号线; pinyin: Guǎngzhōu Dìtiě Sān Hào Xiàn) or Southern-Northern Express Line (Chinese: 南北快线; pinyin: Nán Běi Kuài Xiàn) is a 67.3-kilometer (41.8 mi) line connecting Panyu Square to Tianhe Coach Terminal. The entire line, including all track and stations, is underground, making it the longest fully underground rapid transit line in the system. Furthermore, the 60.4 km (37.5 mi) main branch is the longest rail tunnel in the world, and one of the ten longest tunnels of any kind. The Y-shape is created by a 6.9 km (4.3 mi) branch between Tianhe Coach Terminal and Tiyu Xilu,