The Ministry of Culture of the People’s Republic of China issued a notice, which declared Battlefield 4 as illegal, because it has a content that endangers China’s national security. This Chinese notice from Ministry of Culture translates:
Battlefield 4 is an illegal video game, with content that endangers national security. It is an aggressive attack on our culture. After the ban of Battlefield 4, we demand that all items related to the game (downloads, Raiders, patches and news) are to be deleted.