Waves of mass migrations from Hong Kong villagers exercised their right of abode in the United Kingdom and left for Europe. In 1967, a series of large-scale riots erupted in Hong Kong, causing social instability. These events led some of the richer Hong Kong residents to move abroad. Emigration took place to countries in Southeast Asia, South Africa or South American countries. This wave did not come to a rest until the mid-1970s. On the 19th of December 1984, the People's Republic of China and the United Kingdom signed the "Sino-British Joint Declaration", validated the 1997 transfer of sovereignty over Hong Kong to China. The declaration prompted
Handover of Hong Kong leftists' aim was to leave the UK without effective control, or "to Macau us". The conflict that arose at that point of the negotiations ended the possibility of further negotiation. During the reception of former British Prime Minister Edward Heath during his sixth visit to the PRC, Deng Xiaoping commented quite clearly on the impossibility of exchanging sovereignty for administration, declaring an ultimatum: the British government must modify or give up its position or the PRC will announce its resolution of the issue of Hong Kong sovereignty unilaterally. In 1983, Typhoon Ellen ravaged Hong Kong, causing great amounts of damage