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
Hong Kong Observers Kong government to infiltrate pressure groups and monitor their activities. The greatest emphasis was placed on the Hong Kong Observers. Due to political pressure the committee ceased to exist in 1983. The group's main concern in 1980s was the Sino-British negotiation over the sovereignty of Hong Kong. They called for Hong Kong people to express their views and conducted an opinion poll on Hong Kong future. In 1983 before Beijing and London began negotiation over Hong Kong’s future, Anna Wu led a group of legal confrères to Beijing and met with the then Director of the Hong Kong and Macau