In a statement dated March 31, the State Administration for Radio, Film & Television said that TV dramas that involve characters traveling back in time “lack positive thoughts and meaning.” The guidelines discouraging this type of show said that some “casually make up myths, have monstrous and weird plots, use absurd tactics, and even promote feudalism, superstition, fatalism and reincarnation.” Link
The issued guidelines discouraged producers and writers from using time travel, along with any elements that contain "fantasy ... random compilations of mythical stories, bizarre plots, absurd techniques," if they want their programs to stay on the air. SARFT, however, has the power to pull the plug on any show whenever it wants. Link
It's scary how far they will go to control their people.