杜佑
Emperor Dezong died in 805, and was succeeded by his severely ill son Emperor Shunzong who, in turn, after reigning only a few months, passed the throne to his own son Emperor Xianzong. As Emperor Xianzong was named Li Chun, Wei Chun no longer used his original name and used his courtesy name of Guanzhi instead, to observe naming taboo. Shortly after Emperor Xianzong became emperor, Wei Guanzhi was made an imperial censor with the title of "Jiancha Yushi" (監察御史). He submitted a petition asking that the position be given to his brother Wei Xun instead. As a result, he was made "You Bujue" (右補闕), a consultant at the legislative bureau of government (中書省, "Zhongshu Sheng"), while Wei Xun was made "Jiancha Yushi". In 806, when Du Congyu (杜從郁), the son of the chancellor Du You, was set to be made "Zuo Bujue" (左補闕), a consultant at the examination bureau, Wei Guanzhi and Cui Qun suggested that this was improper. Initially, Du Congyu's title was reduced to "Zuo Shiyi" (左拾遺), a lower rank, but still a consultant at the examination bureau, Wei and Cui further clarified their rationale — that the consultants were there to suggest to the emperor corrections to make when the chancellors' governance were not proper, and they believed it improper for Du Congyu to be effectively casting judgment on his father's governance. Du Congyu thus was instead made the secretary general of the archival bureau.