New Delhi, Jan. 12 -- A Hong Kong court began hearing arguments Monday about the sentencing of democracy advocate and onetime-media magnate Jimmy Lai and his co-defendants, whose convictions under a national security law could land them in prison for life.

Lai, 78, is the founder of the now-defunct Apple Daily newspaper and an outspoken critic of China's ruling Communist Party. He was arrested in 2020 under the law imposed by Beijing following massive anti-government protests that rocked Hong Kong the year before.

In December, he was found guilty of conspiring with others to collude with foreign forces and conspiracy to publish seditious articles.

His conviction raised concerns about the curtailing of press freedom in the former Britis...