BEIJING, April 14 (Xinhua) -- Chinese authorities on Tuesday made public several criminal cases of producing or spreading harmful content including pornography.

The cases that have been cracked cover the illegal activities of organizing porn livestreaming, setting up porn websites or apps, selling porn videos online and publishing unauthorized online games, according to the National Office Against Pornography and Illegal Publications.

In one case cracked by police in the city of Tianjin in April 2019, 29 suspects were arrested for organizing obscene online shows. Over 500 performers were recruited by the group.

In another case in Jiangsu Province, a group was busted for selling porn videos to tens of thousands of WeChat users and earning over 2 million yuan (about 284,000 U.S. dollars). Three in the group were sentenced to over 10 years in prison.

The office said it will maintain the crackdown on pornography and illegal publications.