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Gong Chan Shik (Hangul: 공찬식; hanja: 孔燦植; born August 14, 1993), better known by his stage name Gongchan, is a South Korean idol and the maknae of boy band B1A4. He made a debut on the stage of MBC Show! Music Core on April 23, 2011. He has been part of four mini albums and two official Korean albums and one official Japanese album.