King Cheng reigned 1042–1021 BCE. Duke of Zhou supervised as regent during minority. Duke of Zhou defeated uncles' rebellion by Three Guards. King Cheng stabilized borders by defeating barbarian tribes. Parents were King Wu and Queen Yi Jiang. Queen Wang Si mothered Crown Prince Zhao. Crown Prince Zhao became King Kang of Zhou. House Ji dynasty. Ancestral name Ji. Given name Song. Posthumous name King Cheng. Eastern capital established at Luoyang.