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In the world, 衍 (衍 , 연 , Yǎn) is a common gender-neutral first name. The given name 衍 is characteristic of Eastern Asia, particularly China, where it is quite a rare gender-neutral name, and South Korea, where it is a rare epicene name. Also, 衍 is the last name as well as the forename.
衍 is also a name for the fictitious and mythical characters: Zou Yuan , the Water Margin character and Feng Yuan , the Dream of the Red Chamber character.