China will “firmly fight back” against any interference in its internal affairs after the UK suspended its extradition treaty with Hong Kong and extended an arms embargo on the special administrative region (SAR), the spokesperson of the Chinese embassy to London said.

In a statement posted on the embassy website on Tuesday, the spokesperson said the UK once again contravened international law and the basic norms governing international relations and blatantly interfered in China’s internal affairs in an attempt to disrupt the implementation of the National Security Law for Hong Kong SAR and undermine the city’s prosperity and stability.

“The Chinese side strongly condemns and firmly opposes this. The Chinese government remains unwavering in its resolve to implement the National Security Law for Hong Kong SAR, to safeguard national sovereignty, security and development interest, and to oppose external interference,” the spokesperson said in the statement.

The spokesperson said China urged the UK side to “immediately stop interfering in Hong Kong affairs, which are China’s internal affairs, in any form.”

“China will firmly fight back at any move that interferes in its internal affairs.”

ALSO READ: China eyes 'resolute response' over possible UK sanctions

UK Foreign Secretary Dominic Raab had announced at the House of Commons that the UK will suspend the extradition treaty with Hong Kong immediately and indefinitely and extend an arms embargo to the SAR.

“Recently, the UK has repeatedly made wrong remarks on the National Security Law for Hong Kong SAR to interfere in Hong Kong affairs, which are internal affairs of China. The Chinese side has lodged solemn representations to the UK side on many occasions to express our grave concern and strong opposition,” the spokesperson said.

“Now, the UK side has gone even further down the wrong road in disregard of China’s solemn position and repeated representations.” 

ALSO READ: Experts say UK's Huawei ban casts doubt on openness

The spokesperson said China urged the UK side to “immediately stop interfering in Hong Kong affairs, which are China’s internal affairs, in any form.”

“The UK will bear the consequences if it insists on going down the wrong road,” the spokesperson said.

The spokesperson said the National Security Law  is an anchor for the steady and sustained implementation of “One Country, Two Systems” and for the long-term security, prosperity and stability in Hong Kong. 

“This law will make Hong Kong a safer, better and more prosperous place. We are full of confidence in the bright future of Hong Kong SAR,” the spokesperson said.

READ MORE: Envoy: China, EU can jointly help world against health threats

 “Any attempt to pressurize China and obstruct the implementation of this Law will meet the strong opposition of 1.4 billion Chinese people, including Hong Kong compatriots, and such attempt is doomed to failure,” the spokesperson added.