Clouds gather above luxury residential properties in Hong Kong on June 12, 2011. Hong Kong's finance chief said on June 10 risks for property buyers in the territory were "higher now than ever" as he announced new measures to tame the world's least affordable real estate prices. Financial Secretary John Tsang said the government of the quasi-autonomous city was working to control ever-rising prices amid growing disquiet among the seven million-strong population over the rocketing cost of owning a home.