Last April, China made a curious move and outlawed time travel as a plot topic on television and movies. The State Administration of Radio, Film and Television stated that “Producers and writers are treating serious history in a frivolous way, which should by no means be encouraged anymore.” In a country where the ruling party relies on scientific Marxism for its doctrine and media control, time travel provides a way for characters to fantasize about escaping the current political situation and returning to happier times.
More details can be found in the following articles:
CNN: China Bans Time Travel for Television
FOX: China Bands Time Travel TV Shows
HOLLYWOOD REPORTER: China Bans Time Travel Films