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Throughout the world, Kaikai (Kaikai , 开开 , 开凯 ) is quite a common epicene given name. The forename Kaikai is habitual in Hong Kong, where it is quite a rare epicene name, Taiwan, where it is a rare male name, and India, where it is a rare girly name. Measured by absolute frequency, it most frequently occurs in India, China, and Hong Kong. Much less frequently, Kaikai is the last name as well as the forename.