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In all the world, 肃 (肃 , 숙 , Sù ) is a common epicene first name. The given name 肃 is characteristic of China, where it is a rare gender-neutral name, South Korea, where it is a rare feminine name, and Algeria. Much less frequently, 肃 is the last name as well as the forename.
肃 is also a name for the fictitious and mythical characters: .