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 Mass Transit Railway (MTR) is a major public transport network serving Hong Kong. Operated by the MTR Corporation (MTRCL), it consists of heavy rail, light rail, and feeder bus services, centred around a 10-line rapid transit network, serving the urbanised areas of Hong Kong Island, Kowloon, and the New Territories. The system encompasses 245.3 km (152.4 mi) of railways, as of December 2022, with 179 stations—including 99 heavy rail stations, 68 light rail stops and 1 high-speed rail terminus.