It is expected to be 2023. Beichen Luojin Juanlan Bay is still under construction, and the building facilities are not perfect. The bus line has just opened, and the subway is expected to open in 2023, so it is expected to open in 2023. Tianjin, also known as Jingu and Jinmen, is a provincial-level administrative region, municipality directly under the Central Government, national central city and mega-city of People's Republic of China (PRC), and is the economic center of the Bohai Rim region determined by the State Council.