South Korean star Liu Chengjun was banned by the government. What caused it?

Maybe it's his personal reasons that he didn't get on well with some people and people with more strength, or that he had personal grievances and frictions with the director, which would affect his acting career. It may also be because of his personality that he is not very popular in this circle. Secondly, I think it should be because of other reasons, or it may be because his acting skills are too good, her popularity is too high, some people are jealous of him, or how he was banned. I hope my answer can help you.