Tai Wai
The first section, named “Tuen Ma line (Phase 1)”, runs from Tai Wai station in the New Territories to Hung Hom station in Kowloon. The Tai Wai–Hung Hom segment will connect the Ma On Shan line and West Rail line, forming the new Tuen Ma line. Operation of the Tai Wai to Kai Tak section began on 14 February 2020. The opening of the section from Kai Tak to Hung Hom was delayed and opened on 27 June 2021.