August 2021 - The southern section officially entered the stage of no-load trial operation; January 2021 - Construction completion and trial operation is planned for this year; March 2019 - Bids invited for 114 cars to be operated as 19 six-car trains; Southern section will run from Southeast Point Station and Xinxingcun Station; Line is part of 41.04 km Tianjin Metro Line 4; Project cost - CNY18.695bn