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Surname Gongguang (Gongguang ) , in the world, is an extremely rare cognomen. Much more prevalently, Gongguang is the forename as well as the last name.
供广, 公光, 公广, 共光, 共广, 功光, 功广, 工光, 工广, 弓广, 恭光, 恭广, and 躬光
Jin, Chen, and Zeng