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Throughout the world, 叡 (叡 , 예 , Ruì) is a rare epicene first name. The first name 叡 is habitual in Eastern Asia, particularly South Korea, where it is a rare feminine name, and China, where it is a very rare mostly male, but infrequently female name. More prevalently, 叡 is the last name as well as the forename.
叡 is also a name for the fictitious and mythical characters: Zhou Rui , the Dream of the Red Chamber Character.