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All around the world, Chenghai (成海 , Chenghai , 承海 ) is a common primarily masculine, but very seldom feminine first name. The first name Chenghai is habitual in China, where it is quite a rare predominantly male, but scarcely female name, and India, where it is an extremely rare boy's name. Very seldom, Chenghai is the last name as well as the forename.