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In the entire world, 贞 (贞 , Zhēn ) is a common largely female, but uncommonly male first name. The first name 贞 is habitual in Eastern Asia, particularly China, where it is quite a rare largely girly, but uncommonly masculine name. Much less frequently, 贞 is the last name as well as the forename.
贞 is also a name for the fictitious and mythical characters: Xie Zhen , the Water Margin character.