Movies banned in China

The People's Republic of China (PRC) bans a lot of movies for many reasons. The National Film Administration (国家电影局) decides for mainland China. Hong Kong and Macau have different political systems so the bans below do not apply.
Taiwan, which is known as the Republic of China by those countries that recognize her, is not under the control and jurisdiction of the PRC.
List of banned movies by subject (partial selection).
Company does not even try to sell the film in China.
A Hong Kong outdoor cinema planned to play "The Dark Knight" in October 2022. However, the Government told the cinema to not play the movie. It is because the movie, which is violent, is under "category IIB". "Category II" is further subdivided to two more categories, i.e. "A" and "B".
The 3-tier system.
 was punished in July 2021 for using a controversial slogan, may or may not be relevant.
"Inside the Red Brick Wall (理大圍城)" was approved by Hong Kong censor - Derek Lee in 2021. Up to April 2022, he is still in office. "Inside the Red Brick Wall" is under "category III". In November 2021, the Hong Kong law on censorship was changed. It is not clear whether "Revolution of Our Times (時代革命)" (by Kiwi Chow) is allowed or banned. Chow's movie's name is the later half of the Tong's slogan (liberate Hong Kong; revolution of our times) without former half, without the words of "liberate Hong Kong".
The rules say that Hong Kong "category III" movies cannot be shown to people under 18 years old.