The director of Beijing's liaison office on Saturday said the National Security Law has helped Hong Kong to curb disorder.

Speaking at a national security legal forum in Wan Chai, Zheng Yanxiong said a dual legislation and dual enforcement mechanism between the SAR and the mainland was established after the National Security Law was implemented in Hong Kong.

"It demonstrates the SAR's constitutional duty. It shows that Hong Kong's mechanisms for safeguarding national security and enforcement have improved, while addressing previous shortcomings - and ensuring that the 'One Country, Two Systems' principle is on the right track," he said.

Zheng added that 45 out of 47 defendants were convicted in a subversion case after they were involved in an unofficial legislative primary election.

"Different sectors generally affirmed the ruling, believed that it disseminated correct messages on the rule of law, showed the determination and confidence of the society in safeguarding national security."

Nong Rong, deputy director of the Hong Kong and Macau Affairs Office, said the National Security Law had been effective in improving governance and creating prosperity.

"Over the past four years, Hong Kong has made a significant transformation from chaos to governance, returning to the track of development. In March, Hong Kong completed legislation for Article 23 of the Basic Law, further solidifying the legal shield for safeguarding national security," he said.

"The Hong Kong National Security Law explicitly identifies its purpose as maintaining the prosperity and stability of the Hong Kong SAR, highlighting this original aspiration to protect development."

Meanwhile, the head of the Office for Safeguarding National Security of the central government Dong Jingwei said the central government has full trust in the SAR government, authorising it to have the responsibility for safeguarding national security.

He said the central government would deal with any problems that the SAR government finds difficult to handle.