Hong Kong's new security law explained
China has imposed a national security law on Hong Kong which changes many things for citizens in the territory.
It introduces new penalties - up to life in prison - for offences including advocating for Hong Kong's independence.
Critics have called it "the end of Hong Kong", but supporters say it is needed to stamp out the chaos of anti-government protests.
China correspondent Stephen McDonell explains what the law means, and what people there think.
Video by Edward Lawrence.
Read more: China's new law: Why is Hong Kong worried?