China said on Tuesday it will not allow any external forces to interfere in Hong Kong\'s internal affairs and damage Hong Kong\'s prosperity and stability, state-run Xinhua News Agency reported. China has the ability and determination to safeguard national security,\" Foreign Ministry spokesman Hong Lei was quoted as saying at a press conference in Beijing. Hong\'s remarks came after reports that the UK\'s intelligence agency has been strengthening infiltration since China resumed sovereignty over Hong Kong in 1997, according to Xinhua. On Monday, the Chinese government also expressed \"strong dissatisfaction and resolute opposition\" to the newspaper opinion piece by a British minister and urged Britain to immediately stop interfering in Hong Kong\'s internal affairs.\" British minister of state at the foreign office Hugo Swire issued an article in a newspaper in which he openly made irresponsible remarks on Hong Kong\'s political system. \"The development of the political system is an internal affair for Hong Kong and a domestic affair of China. We urge the British side to immediately stop intervening in Hong Kong\'s internal affairs in any form,\" Hong said on Monday.