Conservatism in Hong Kong the way to maintain the "status quo" of Hong Kong. They initially supported the British Conservative Prime Minister Margaret Thatcher's efforts in insisting the validity of the Treaty of Nanking of 1842. However, Deng Xiaoping, the Chinese paramount leader insisted in restoring sovereignty in Hong Kong in 1997, but guaranteed the "capitalist system and way of life shall remain unchanged for 50 years," which was later written in the Article 5 of the Hong Kong Basic Law. Besides its "Old Left" Beijing loyalists in the colony which were represented by the Hong Kong Federation of Trade Unions (HKFTU), the Communist
British nationality law and Hong Kong Kong began to fear for their future post-1997. Emigration was rampant and a brain-drain was beginning to affect the economy of Hong Kong. To stem the drain, people urged the British government to grant full British citizenship to all Hong Kong BDTCs – but this request was never accepted. However, the British did agree to creating the British Nationality Selection Scheme, which granted to a select 50,000 people and their families the ability to obtain full British citizenship without having to fulfill the ordinary requirements, under the "British Nationality (Hong Kong) Act, 1990". Under the act, the Home Secretary was