1. Taiwan: The official language of Taiwan is Mandarin Chinese, which is spoken by the majority of the population.
2. Singapore: Mandarin Chinese is one of the four official languages of Singapore and is widely spoken by its multiethnic population.
3. Malaysia: Malaysia has a substantial ethnic Chinese population, and a significant portion of the country's citizens speak Mandarin Chinese or Chinese dialects such as Hokkien, Cantonese, and Hakka.
4. Indonesia: While Chinese is not an official language of Indonesia, there is a notable ethnic Chinese minority, and some Indonesian citizens speak Chinese languages, particularly in some urban areas.
5. Brunei: Brunei has a small ethnic Chinese population, and a portion of the population may speak Chinese languages, especially Mandarin or Cantonese.
6. Thailand: Thailand also has a sizable ethnic Chinese minority, and some Thai citizens may speak Chinese languages, especially in business or commercial contexts.
7. Cambodia: Cambodia has a small Chinese community, and a portion of the population may speak Chinese, particularly Mandarin or Cantonese.
8. Vietnam: Vietnam has a long history of Chinese influence and trade, and a portion of the population, especially the ethnic Chinese minority, may speak Chinese languages such as Mandarin or Cantonese.
9. Philippines: The Philippines has some ethnic Chinese communities, and some Filipinos may have varying levels of proficiency in Chinese languages, especially Mandarin.
10. Myanmar (Burma): Myanmar has a significant ethnic Chinese population, especially in urban areas such as Yangon and Mandalay. Many ethnic Chinese in Myanmar speak Mandarin or other Chinese dialects.