sentences:  The economy underwent an upturn in the 1960s, which led to the opening of several shopping centres.Two of the first modern shopping centres were Ocean Terminal in Tsim Sha Tsui and The Landmark in Central, above the MTR station.Daimaru led a trend of Japanese exports into Hong Kong in 1966 and Deng Xiaoping's 1978 Open Door Policy made Hong Kong the definitive gateway to China.