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Globally, Sŏng (成 , Sŏng) is a widespread primarily male, but very seldom female first name. The forename Sŏng is characteristic of Eastern Asia, particularly China, where it is quite a common predominantly boy's, but very infrequently feminine name. Also, Sŏng is the last name as well as the forename.
Sŏng is also a name for the fictitious and mythical characters: Li Cheng , the fictional character in Water Margin.