Guangxi, the neighbor province, used to be a Cantonese-speaking area, especially in the capital Nanning. Since the promotion of Mandarin from the 1990s, the number of Cantonese speakers has been dropped to less than 30% according to an unofficial statistic years later, most of who are the elder generations.《推普的"南宁现象"》 ，《羊城晚报》，2010年7月13日。
