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In the world, 열 (悦 , Yeol , 悅 ) is a widespread gender-neutral first name. The first name 열 is characteristic of Eastern Asia, particularly China, where it is quite a common gender-neutral name, and South Korea, where it is a rare boy's name. Very seldom, 열 is the last name as well as the forename.
열 is also a name for the fictitious and mythical characters: Fang Yue , the character from Luo Guanzhong's Romance of the Three Kingdoms.