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In all the world, Цао (Cao , Tsao , Цао ) is a common epicene first name. The given name Цао is characteristic of Macao, where it is quite a common gender-neutral name, Vietnam, where it is quite a rare epicene name, and Singapore. In absolute terms, it is commonest in Vietnam, China, and Indonesia. Much more prevalently, Цао is the last name as well as the forename.
Цао is also a name for the fictitious and mythical characters: .