After the takeover by the Communist in China, popular music were denounced as Yellow Music, a form of pornography. and record companies of Shanghai such as Baak Doi in 1952 left China. Mainland China was left on the sidelines in the development of pop music for a few decades, as the Chinese pop music industry moved from Shanghai to Hong Kong and Taiwan. The 1970s saw the rise of cantopop in Hong Kong, and mandopop in its neighboring country Taiwan. In the late 1970s, economic reforms by Deng Xiaoping in mainland China led to the introduction of gangtai culture of Hong Kong and Taiwan, and pop music returned to mainland China. However, for a time the government still have a censorious attitude toward pop music; for example, Hong Kong's icon Anita Mui was banned from returning to the mainland concert stage after performing the song "Bad Girl" during the 1990s in China as punishment for what the Chinese government called her rebellious attitude. Nevertheless, pop music continued to increase in popularity in mainland China, and by 2005, China had overtaken Taiwan in term of the retail value of its music sales. The beginning of the 21st century has seen an increasing number of mainland Chinese artists who produced a wide range of Mandarin pop songs and the release of many new albums. However, despite having a much larger population and increasing consumption of Chinese pop music, China is not yet considered a major production hub of pop music. Many popular mainland Chinese, Hong Kong and Taiwanese music artists were included in promotions for the 2008 Beijing Olympics. Hip hop and rap Mandarin rap music gradually became popular in mainland China, especially in Shanghai, Beijing, Chongqing and Sichuan where pop culture is very diverse and modern. Although Chinese perform rap in different dialects and languages, most Chinese hip hop artists perform in China's most popular language: Mandarin. Cantonese rap is also very diverse in cities such as Guangzhou, Shenzhen and Hong Kong. Electronic music Electronic dance music (EDM) has become the second biggest music category in China. Among the sub-genres, house music is at the top, followed by bass music and trap music. Reality talent shows and competition programs such as Rave Now and E-Pop of China contributed to promote electronic music towards the mainstream audience. In recent years, numerous of local Chinese electronic music producers have emerged and got signed