The Kowloon Southern link is a section of the MTR East Rail and Tuen Ma line linking Nam Cheong station and Hung Hom station. The rail link is fully underground, lies along the south-west coastline of Kowloon Peninsula, east of rail tracks of the Tung Chung line and Airport Express. Kowloon Southern Link has one underground intermediate station called Austin station. It is located adjacent to the Canton Road Government Offices, close to Kowloon station of Tung Chung line and Airport Express. However, the structures do not provide a direct transfer between the two stations.

The Ma On Shan line was a rapid transit line that formed part of the Mass Transit Railway (MTR) system in Hong Kong. Coloured brown on the MTR map, the line acted as a branch of the East Rail line that connects the new towns of Sha Tin and Ma On Shan in the northeastern New Territories.