In one case in central China's Hunan Province, more than 10 million copies of illegal publications that are deemed harmful to juveniles were confiscated, with a total market price of 114 million yuan (U.S. $ 16.7 million).
Chinese authorities launched a campaign earlier this year to foster a healthy cultural environment for children.
Three cases of spreading child pornography and 19 cases concerning copyright infringement were also disclosed by the office.
More than 2 million web links to harmful content were eliminated. In addition, 15 online short video apps were closed or removed from app stores.