to late 2010s, observers have noted a sharp increase in production values and script quality in some series. Also, a number of Chinese television series used music from Hollywood movies as incidental music. Dramas are generated with a specific genre like romance, comedy, horror, family drama, sports, or a mixture of these in the form of ancient, historical, Republican era or modern to highlight the theme and suits the audience's interest. Chinese-language dramas are often classified by where they were produced, such as mainland dramas, Taiwanese dramas, Hong Kong dramas, and Singaporean dramas. Each differs in the style of filming and editing format. Most consist of romance, family and friends with the combination of pop cultural themes. Dramas have also been the targets of censorship, with series such as Story of Yanxi Palace and Ruyi's Royal Love in the Palace being cancelled by the Chinese government for not promoting socialist values. Dubbing Chinese dramas are often dubbed, by professional voice actors. It usually takes one month to do the dubbing for 30 to 40 episodes, in post-production. Popular voice actors may dub several series a year, often resulting in drama fans recognizing their voices. There are several reasons why actors would be dubbed in Chinese television dramas. First of all, dramas should be aired using putonghua, the standard Mandarin dialect, and many actors may have an accent, according to which region they come from. To standardize the pronunciation throughout the production, voice actors trained in standard Mandarin are employed in post-production. Filming conditions may also result in poor audio quality and noises, which requires work in post-production. Voice acting is also sometimes used to improve an actor's otherwise poor performance. Censorship may also require changing some lines in post-production. There are actors who are usually not dubbed, including Hu Ge, Wang Kai, Jin Dong, Jiang Xin and Deng Chao. See also C-pop Mandopop Cinema of China Taiwanese drama Hong Kong television drama List of Chinese television series References See also Television in China Television drama Chinese plays