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In the world, Huaishi (Huaishi ) is an extremely rare male given name.
怀世, 怀仕, 怀势, 怀十, 怀史, 怀士, 怀实, 怀市, 怀师, 怀希, 怀施, 怀时, 怀氏, 怀狮, 怀石, 怀识, 怀诗, 怀轼, 怀适, 懷師, 槐仕, 淮世, 淮石, and 耲笶
Liu, Song, Wang, Yang, Zhou, and Zhang