This story has been made freely available as a public service to our readers. Please consider supporting SCMP’s journalism by subscribing. New users who download our updated app get a seven-day free trial. Beijing’s point man on Hong Kong affairs is addressing a national security law forum on Saturday as part of his third inspection visit to the city to assess its progress on multiple fronts. Xia Baolong’s attendance at the forum, which is being held to mark the fifth anniversary of the...