Cantopop singer Hins Cheung, who previously expressed support for social movements in Hong Kong, will lead young people arrested during the 2019 anti-government protests on visits to mainland China to witness the country’s prosperity and serve as a mentor for a “special rehabilitation project” under the Security Bureau. Secretary for Security Chris Tang Ping-keung also revealed on Saturday that the project, which had been running over the past two years, targeted about 7,000 people arrested but...