Hong Kong independence a Hong Kong representative in the Sino-British negotiation was rejected by Beijing. In 1984, the British and Chinese governments signed the Sino-British Joint Declaration which stated that the sovereignty of Hong Kong should be transferred to the PRC on 1 July 1997, and Hong Kong should enjoy a "high degree of autonomy" under the "One Country, Two Systems" principle. From 1983 to 1997, Hong Kong saw an exodus of emigrants to overseas countries, especially in the wake of the 1989 Tiananmen Square crackdown, which more than a million Hongkongers showed up on the streets to support to student protesters in
British Forces Overseas Hong Kong internal threats. The greatest test was in 1941, when Japanese forces invaded Hong Kong, leading to the 44-month-long Japanese occupation of Hong Kong. Internal Security was the responsibility of the Hong Kong Government, in particular the Royal Hong Kong Police. It was supported by British Forces in Hong Kong should it be called upon to do so. During the Hong Kong 1967 riots, in which 51 people were killed, the British garrison supported the Royal Hong Kong Police in quelling the disturbance. Until 1995, the safety of much of the Sino-Hong Kong border was the responsibility of the British forces