Matthew Leung Ming-hong had been working as a breaking-news reporter for six years in Hong Kong but recently emigrated to the United Kingdom because of concerns about growing restrictions on journalists working in the city. Three Hong Kong media outlets popular with the opposition have folded in just six months, following the introduction of a controversial national security law in Hong Kong on June 30, 2020, raising fears about the future of press freedom in the city. The 29-year-old is…