It is now three years after the 2019 anti-extradition movement in Hong Kong, and the Hong Kong authorities are still chasing and prosecuting the protesters. To date, nearly 3,000 of them have been prosecuted, with more than 1,000 convicted.
While in prison they can only communicate with the outside world by letters. On the other hand, even though many Hong Kong people have moved overseas in recent years, a lot of them still care about their like-minded fellows in Hong Kong.