Jimmy Lai, the pro-democracy former Hong Kong media tycoon and a fierce critic of Beijing, has been sentenced to 20 years in prison in one of the most prominent cases prosecuted under a China-imposed national security law.

A Hong Kong court is hearing arguments about the sentencing of democracy advocate Jimmy Lai.

A Hong Kong court convicted pro-democracy former media mogul Jimmy Lai of conspiracies to commit sedition and collusion with foreign forces in a case that marks how much the semi-autonomous Chinese city has changed since Beijing began a wide-ranging crackdown on dissent five years ago.

The final arguments have concluded in the national security trial of Hong Kong pro-democracy newspaper founder Jimmy Lai.

A Hong Kong court is hearing final arguments in the national security trial of former Apple Daily publisher Jimmy Lai.