Hong Kong has called on foreign governments to respect the city's trade offices abroad after a staff member in its London branch was charged in Britain.
Three men in the U.K. have been charged with assisting the Hong Kong intelligence service, following their arrest earlier this month by counterterrorism police.
The popular protest song "Glory to Hong Kong" is now banned in the city, stoking fears of government crackdown on dissidents and restriction of the internet.
Hong Kong has enacted new legislation to curb the use of single-use plastic cutlery and Styrofoam products, aiming to tackle pollution, officials said.