The service between Kai Tak(啟德) and Tai Wai(大圍) Stations on MTR Tuen Ma Line(屯馬綫) began on February 14, 2020. It was integrated with the section between Tai Wai and Wu Kai Sha(烏溪沙) Stations, which operated as Ma On Shan Line(馬鞍山綫). The whole section is now referred to as the line name “MTR Tuen Ma Line Phase 1(屯馬綫一期)”.
The newly opened stations are Kai Tak and Hin Keng(顯徑) Stations. It is connected to MTR Kwun Tong Line(觀塘綫) at Diamond Hill(鑽石山) Station on the way.