Hong Kong's former No. 2 official John Lee, who will run in a leadership election in May, said on Saturday he plans a new chapter for the global financial hub that has been wracked by unprecedented upheaval with pro-democracy protests and COVID-19.

Lee, 64, resigned on Wednesday to run to replace Chief Executive Carrie Lam, whose five-year term ends on June 30. Lam oversaw one of the most tumultuous periods in Hong Kong history with pro-democracy demonstrations and the coronavirus.

"This will be a new symphony and I am the conductor," Lee, who was the city's security chief during anti-government protests in 2019, told a news conference.