High Quality Content by WIKIPEDIA articles! The Taipei Metro Luzhou Line is a high-capacity, underground branch of the Xinzhuang Line that runs through Taipei and New Taipei. It forms part of the Orange Line and is named for the district of Luzhou where the line terminates. The line originates from Daqiaotou (where it branches off from the Xinzhuang Line). The line is 6.4 km (4.0 mi) long with 5 underground stations and a maintenance depot.