HONG KONG—Hong Kong began promoting its reopening this month with a 30-second video featuring the city’s leader, John Lee , zooming across the screen, touting “new opportunities, new facilities, new experiences” as the backdrop fills with the repeated exclamation “more!”The campaign marks the start of Hong Kong’s effort to redefine itself after several tumultuous years that included a mass protest movement, a continuing political crackdown and some of the world’s strictest and most enduring pandemic controls, which largely cut off a city long considered open and cosmopolitan.