Yeung Tsz-chun, the former teacher of Diocesan Girls' School, participated in an assembly in Admiralty on June 12, 2019. He was being hit in his right eye with a suspected rubber bullet on that day.

Yeung was arrested in hospital for "rioting" and released unconditionally after a few months. But nearly three years later, he was rearrested this April and charged with two counts of "participating in an unlawful assembly".

During the process of asking for the mitigation in court, Yeung’s defense lawyer said he has pleaded guilty since he has acknowledged his responsibility for his behavior and also suffered permanent injury to his right eye’s sight.

Besides, he has always enjoyed a good reputation when he worked as a teacher previously, along with resigning from his work and opening a publishing company aimed to educate the young generation after the protest.

Principal Magistrate Ada Yim Shun-yee claimed that Yeung has stayed on the scene of the assembly from the morning to the afternoon without leaving even though the condition has become intense. “It is hard to believe that his intention for taking part in the assembly ‘seeking peace’ as he claimed previously,” said Yim.

According to the magistrate, Yeung, along with other participants who carried the iron fences which surrounded the protesters away, were considered as “apparently supporting the people who joined the assembly” and ignored the police’s persuasion.

Yim said the wound to Yeung's eye was "a pity" but declined to discount his sentence as police had given repeated warnings. In consideration of Yeung’s attitude to plead guilty and understanding of his crime, the magistrate noted that he should be sentenced to nine months in prison on his charges.

Said in a post on his Facebook earlier, Yeung claimed he has already prepared for the sentence and expressed knowledge of the cost of his actions.