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All over the world, ไช่ (Chai , Xaii , Xye ) is a common gender-neutral first name. The first name ไช่ is characteristic of Mongolia, where it is quite a common boy's name, Brunei, where it is quite a common epicene name, and Singapore, where it is quite a rare gender-neutral name. In absolute terms, it is commonest in Malaysia, Morocco, and China. More prevalently, ไช่ is the last name as well as the forename.
ไช่ is also a name for the fictitious and mythical characters: Chai Xianghua , the Fictional character, Soulcalibur.