Sino-Thai

It is true that the majority of sino-thai in Bangkok today are from Teochew speaking family. However, Teochew is NOT to be considered as a common language in Bangkok anymore because most of sino-thai aged 40 years old or younger couldn't use Teochew to converse anymore. Standard Thai is their mother tongue and this is the only language they need to know and speak at home, in school and workplace. In other words, the Teochew in Thailand or Sino Thai in general had been successfully assimilated into Thai society in term of language.

However, in recent years, Mandarin has become one of the most favorable foreign languages among thai students (for both sino-thai or pure thai). We can find Mandarin language teaching centers everywhere in Bangkok. Please note that these students are mostly taught by language teachers imported from China, who tend to speak Mandarin with strong Beijing accent in teaching. This is contrast to the situation in Malaysia and Singapore where majority of Chinese language teachers are local people.

Thus, it is possible that the number of Mandarin speakers will overtake the number of Teochew speakers in Bangkok in the near future.