INTERNATIONAL: Chinese President Xi Jinping will attend a meeting celebrating the 25th anniversary of Hong Kong's return to the motherland and also the inaugural ceremony of the sixth-term Hong Kong Special Administrative Region (HKSAR) on Friday morning.

Authorities deployed a massive security force around Hong Kong on Friday as Chinese President Xi Jinping prepared to swear in the city's new leader and attend celebrations to mark the 25th anniversary of the former British colony's handover to Beijing.

Red lanterns and posters declaring a "new era" of stability decorated main roads and walkways close to the convention centre where the last colonial governor, Chris Patten, tearfully handed Hong Kong back to China at a rain-drenched ceremony in 1997.

Xi and his wife Peng Liyuan arrived in Hong Kong by train Thursday afternoon. Xi did not attend the flag-raising event.

They were greeted by Chief Executive Carrie Lam, her husband Lam Siu-por and Central People's Government Liaison Office in the Hong Kong Special Administrative Region Director Luo Huining at the platform of the Guangzhou-Shenzhen-Hong Kong Express Rail Link West Kowloon Station.

Giving brief remarks to reporters, the President said Hong Kong had withstood a series of grave tests and overcome a series of risks and challenges in a period of time, adding that Hong Kong has since emerged stronger and shown great vigor.

Xi had also said the city had overcome its challenges and "risen from the ashes".

Former Hong Kong security chief John Lee, who is sanctioned by the United States over his role in implementing the new national security law, takes charge at a time when the global financial hub is facing an exodus of people and talent amid some of the toughest COVID-19 restrictions in the world.

Xi's trip to Hong Kong is his first since 2017, when he swore in the city's first female leader, Carrie Lam, who oversaw some of the territory's most tumultuous times marked by anti-government protests in 2019 and the COVID epidemic.

Britain returned Hong Kong to Chinese rule on July 1, 1997, under a "one country, two systems" formula which guarantees wide-ranging autonomy and judicial independence not seen in mainland China.

Critics of the government, including Western nations, accuse authorities of trampling on those freedoms, which Beijing and Hong Kong reject.