Hong Kong’s national security laws must be continually improved to address risks and close loopholes amid geopolitical tensions, a former senior mainland Chinese official overseeing the city’s affairs has said, while insisting they are less stringent than those in the United States and the United Kingdom. Wang Zhenmin, former bureau chief of the State Council’s Hong Kong and Macau Office (HKMAO), made the remarks at a seminar organised by the semi-official Chinese Association of Hong Kong and...