Hong Kong`s autonomy was guaranteed by the “one country, two systems” agreement, enshrined in the 1984 Sino-British Joint Declaration signed by then-Chinese Prime Minister Zhao Ziyang and British Prime Minister Margaret Thatcher. But the UK says the deal – known as a joint declaration – is under threat because the region has passed a new law that gives China new extended controls over Hong Kong residents. Just as the atmosphere of the discussions became cordial, members of the Hong Kong Legislative Council were impatient with the long-standing secrecy of the progress of the Sino-British talks on the Hong Kong issue. According to a motion by legislator Roger Lobo, “this Council considers it essential that the proposals for hong Kong`s future be discussed in this Council before an agreement is reached,” was unanimously adopted.  The list included representatives of Hong Kong, members of the legislative and executive councils, presidents of the Bank of Hong Kong and Shanghai and Standard Chartered Bank, prominent businessmen such as Li Ka-shing, Pao Yue-kong and Fok Ying-tung, Martin Lee Chu-ming and Szeto Wah. Some political analysts felt that an agreement was urgently needed, as there were fears that Hong Kong`s economy would collapse untreated in the 1980s. Concerns about land ownership in the new leased territories also contributed to the problem. Although discussions on Hong Kong`s future began in the late 1970s, the final date of the joint declaration was influenced by factual and economic factors rather than geopolitical imperatives.  Faced with the increasing openness of the Government of the People`s Republic of China and economic reforms on the continent, Margaret Thatcher, then Prime Minister of the United Kingdom, sought the agreement of the People`s Republic of China on the continuation of the British presence on the territory.
 The communist press published reports that the project was a bad plan to bleed Hong Kong before handover and let the territory take on serious debt.  After three years of negotiations, Britain and the PRC finally agreed on the construction of the new airport and signed a Memorandum of Understanding.  To remove the hills and reclaim the land, it took only a few years to build the new airport. On 19 December 1984, after years of negotiations, the British and Chinese leaders signed a formal pact authorizing the colony`s turnover in 1997, in exchange for formulating a Chinese Communist government policy with a “one country, two systems”. Prime Minister Margaret Thatcher called the agreement “a milestone in the life of the territory, in anglo-Chinese relations and in the history of international diplomacy.” Hu Yaobang, the general secretary of the Communist Party of China, called the signing “a day of red letters, an occasion of great joy” for one billion people in China. In March 1979, Hong Kong Governor Murray MacLehose made his first official visit to the People`s Republic of China (PRC) and took the initiative to raise the issue of Hong Kong sovereignty with Deng Xiaoping.  Without clarification and definition of the official position of the Government of the People`s Republic of China, it would be difficult to arrange real estate and loan leases in Hong Kong in the next 18 years.  Britain quickly returned to this unofficial part of the agreement and attacked Kowloon Walled City in 1899 to find it abandoned. They didn`t do anything with it, or the outpost, and the question of ownership of Kowloon Walled City was directly in the air.