@Malkuku that's actually a long story. The Untamed chinese bl drama which started zhan and yibo aired in 2019. It became a huge hit globally even if there was no actual romance scenes shown in the drama because of China's censorship. The drama was based on a novel called MDZS and it contained romantic scenes which had audio books , that is available in youtube if you want to hear it .
After the drama aired , alot of yizhan/zhanyi fanfictions were written on various sites. However in Feb 2020 , an AO3 yizhan fanfic got viral because of its insane plot . The plot consisted of Zhan being a prost*tute and yibo being his roommate . The work contains explicit pornographic content and the feminization of Xiao Zhan. Even scenes like zhan coming back from his work with white c*m on his face.
This type of explicit work got the Chinese citizens talking and sending hate to zhan as a result even though he had no hand in it and it was all because of a fan who decided to write things like that. This came to be known as The 227 china incident and it caused the AO3 app to be banned in China.
As a result, of the backlash alot of fans started boycotting the brands zhan worked with. At last zhan decided to break contracts with many famous brands as he was scared even the brands would get hate for supporting him.
He submitted an apology video and said sorry if he has offended anyone even if he wasn't at fault . Finally in December 2020 , he held a concert as a singer . He expected no one to come and was prepared to face the less audience . But as he came up on stage the entire audience lightsticks got lit in red which is his fandom color.
After this incident China's censorship rules became stricter. Also this issue marked as the last time zhan and yibo would ever publicly interact. After 227 started , neither zhan nor yibo was seen even mentioning each other's names as it would spark controversy.
Hope it helps.... <3
