After World War II, Shau Kei Wan gradually developed into a fish-trading market (a position it still holds today). Also, many Mainland China refugees began to settle into the area at this time, and built around 13 mountain villages in the ensuing years. Most of them were slum houses, and sanitations in those areas were generally atrocious. In the 1960s, the Hong Kong Government began to replan the area once more, building public housing estates and beginning landfill projects. The plans went ahead slowly until 1975, when a large fire burnt down many of the slum houses in the Aldrich Bay Typhon Shelter which were built along the shore & over the water of the bay. Afterwards, the government began to bulldoze slum areas and built public housing in its place.