The Cinema of China is one of three distinct historical threads of Chinese-language cinema together with the Cinema of Hong Kong and the Cinema of Taiwan. Since 1949 the cinema of mainland China has operated under restrictions imposed by the Communist Party of China’s State Administration of Radio, Film, and Television and the Publicity Department. Many films with political overtones made in China are still censored or banned in China itself; however, some of these films are distributed abroad commercially or at film festivals. China also restricts the showing of foreign-made films in Chinese cinemas. Currently, the vast majority of the Mainland-produced movies use Mandarin. Mainland films are often dubbed into Cantonese when exported to Hong Kong for theatrical runs.