LONDON - The Chinese Embassy in Britain on Thursday expressed grave concern over and firm opposition to British Home Secretary Priti Patel's meeting with "Hong Kong independence" activist Nathan Law, and urged the British side to immediately right its wrongs and take measures to address the negative impact.

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The spokesperson of the Chinese Embassy said in a statement that Law, as the founding chairman of Demosisto, an organization that seeks "Hong Kong independence," is wanted by the Hong Kong police on suspicion of secession and collusion with foreign or external forces to endanger national security.

The Chinese embassy urged the British side to immediately stop all forms of interference in Hong Kong affairs, which are China's internal affairs 

"The UK Home Secretary's brazen move of meeting with someone who is wanted by the police in China and lending support to 'Hong Kong independence' elements constitutes grave interference in China's internal affairs and judicial sovereignty, severe breach of international law and the basic norms governing international relations and complete violation of the UK's position of not supporting 'Hong Kong independence,'" said the spokesperson.

The spokesperson stressed that since the handover of Hong Kong, the principles of "one country, two systems," "Hong Kong people administering Hong Kong" and a high degree of autonomy have been implemented fully and the people have enjoyed unprecedented democracy and freedoms in Hong Kong.

"Despite Hong Kong being a special administrative region of China for 23 years, the UK side still seems unable to come to terms with this fact ... This reflects a typical, colonial mentality!"

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The spokesperson reiterated that Hong Kong is a part of China. Hong Kong affairs are purely China's internal affairs and brook no interference by any foreign country in any form. The Chinese government remains unwavering in its determination to safeguard China's sovereignty, security and development interests, to implement "one country, two systems" fully and accurately, to enforce the National Security Law for the Hong Kong Special Administrative Region and to oppose any interference in Hong Kong affairs by any external force.

The Chinese embassy urged the British side to immediately stop all forms of interference in Hong Kong affairs, which are China's internal affairs.