context: Yuchi Jingde was born in <585 in Shuozhou (now Shanxi Province) during the reign of Emperor Wen of Sui. From his surname, Yuchi, it appears that he is of ethnic Xianbei (one of the minority tribes in northern China). During the reign of Emperor Yang of Sui (son of Emperor Wen) who was wrong, a peasant uprising erupted throughout the country against the arbitrariness of the emperor. Yuchi joined a volunteer militia formed by the government to fight the rebels. He received an award for his courage in the battlefield.
question: When was Yuchi Jingde born?
answers.text: 585