environment seeing it as trendy and rich due to the popularity of Hong Kong entertainment, but since the 2000s, the newer migrant settlers increasingly showed less interest in the local culture and very often strictly demanding the official obligations of the local residents to command speaking Mandarin as the official Chinese language to them. Though as of the 2020s, some additional renewed efforts to preserve the Cantonese language and culture have been introduced with some schools in Guangzhou now starting to teach some limited Cantonese language classes, activities related to Cantonese language and culture and as well as hosting Cantonese appreciation cultural events. Many local Cantonese speaking families in Guangdong province overall in general including in Guangzhou have started placing more stronger emphasis to encourage the use of Cantonese with their children to preserve the local language and culture. In a 2018 report study by Shan Yunming and Li Sheng, the report showed that 90% of people living in Guangzhou are bilingual in both Cantonese and Mandarin, though fluency will vary depending on if they are locally born to the city and the surrounding Guangdong province or migrants from other provinces, which shows how much importance the Cantonese language still has in the city despite the strict policy rules from the government to be using Mandarin as the country's official language. Southeast Asia Cantonese has historically served as a lingua franca among overseas Chinese in Southeast Asia, who speak a variety of other forms of Chinese including Hokkien, Teochew, and Hakka. Additionally, Cantonese media and popular culture from Hong Kong is popular throughout the region. Vietnam In Vietnam, Cantonese is the dominant language of the main ethnic Chinese community, usually referred to as Hoa, which numbers about one million people and constitutes one of the largest minority groups in the country. Over half of the ethnic Chinese population in Vietnam speaks Cantonese as a native language and the variety also serves as a lingua franca between the different Chinese dialect groups. Many speakers reflect their exposure to Vietnamese with a Vietnamese accent or a tendency to code-switch between Cantonese and Vietnamese. It is also used by the San Diu people. Malaysia In Malaysia, Cantonese is widely spoken amongst the Malaysian Chinese community in the capital city of Kuala Lumpur and the surrounding areas in the Klang Valley (Petaling Jaya, Ampang, Cheras, Selayang, Sungai Buloh, Puchong, Shah Alam, Kajang, Bangi, and