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Chin Haw or Chin Ho (Thai: จีนฮ่อ) are Chinese people who migrated to Thailand via Burma or Laos. Most of them were originally from Yunnan, the southern province of China. They speak Southwestern Mandarin.
Generally, the Chin Haw can be divided into three groups according to the time of their migration.
They have engaged in the heroin trade. Ma Hseuh-fu, from Yunnan province, was one of the most prominent Chin Haw heroin drug lords, his other professions included trading in tea and a hotelier.
The Muslim Chin Haw are the same ethnic group as the Panthay in Burma who are also descendants of Hui Muslims from Yunnan province, China.