San Diu people
The Sán Dìu (also known as San Deo, Trai, Trai Dat and Man Quan Coc; Chinese: 山由族; pinyin: Shān yóu zú; Jyutping: saan1 jau4 zuk6; Cantonese Yale: Sanyau Juk; Chữ nôm: 𠊛山由; Vietnamese alphabet: Người Sán Dìu) are an ethnic group in northern Vietnam who predominantly speak Sán Dìu language, a Yue Chinese language. They are believed to have migrated from the Liangguang region of modern-day China around the 15th century.