"Chinese internet companies and government departments employ several million censors to police content that the ruling Communist party finds objectionable, according to local media. As China’s online population has boomed, human censors have been overwhelmed with an ever-growing wave of online content. Their job is to remove pornographic and violent content, as well as themes deemed “politically sensitive” by the authoritarian government, such as homosexuality. Censorship of material is an increasingly costly, as well as risky, exercise for internet companies in China."
"iQiyi, a top video-streaming platform, has turned to machine learning to filter content Beijing wants to ban. IQiyi’s algorithms automatically delete about 10 per cent of all content uploaded. The algorithms then grade the remaining videos for their risk of containing illegal material and human censors review potentially problematic videos."
iQiyi''s team of content censors only doubled from 2014-2017, despite a 20-fold increase in videos on the platform in the same amount of time.