The Office for Safeguarding National Security (OSNS) on Monday held a flag-raising ceremony to mark five years since the National Security Law (NSL) was implemented in Hong Kong.

In a speech at the event, OSNS director Dong Jingwei said the enactment of the NSL was an important milestone in the implementation of One Country, Two Systems, and Hong Kong is now entering a new stage where it's ready to take a leap forward.

"In the five years since the National Security Law was implemented, the Hong Kong society has bid farewell to turmoil and unrest and has restored stability and peace. The executive-led system of the special administrative region is operating smoothly, and there's new life in its governance," he said.

"The historic legislation of Article 23 under the Basic Law has been completed, and the legal system for safeguarding national security is continuously improving."

He also noted that the NSL, together with home-grown national security legislation under Article 23 of the Basic Law, have safely protected the legitimate rights and interests of local and foreign investors.

At the same time, he noted that the SAR has continued to consolidate and enhance its unique advantages.

Dong added that his office will continue to work with the SAR government to prevent, suppress and punish any acts and activities endangering national security.

Chief Executive John Lee wrote in a congratulatory message that the office has been overseeing, guiding, coordinating and supporting the SAR in accordance with the NSL in carrying out its duties to safeguard national security over the past five years.

He thanked the office for its strong support and its outstanding and selfless contributions, adding that his administration will continue working to overcome difficulties and serve the nation.

The event was attended by 150 dignitaries, including senior SAR officials such as Chief Secretary Eric Chan, Secretary for Security Chris Tang and Police Commissioner Joe Chow.