Fuzhou, Jiangxi
On one way during Du You's visit, however, when Wei was judging over a difficult case, Wei wanted to test Du and therefore asked him for his opinions, and his opinions were all correct ones, impressing Wei. Wei kept him as legal advisor. Later, when Wei served successively as the governor of Zhexi Circuit (浙西, headquartered in modern Zhenjiang) and military governor ("Jiedushi") of Huainan Circuit (淮南, headquartered in modern Yangzhou, Jiangsu), he continued to invite Du to serve on staff and entrusted Du with many responsibilities. Later, Du was recalled to Chang'an to serve as "Gongbu Langzhong" (), a supervisorial official at the ministry of public works (工部, "Gongbu"). Yet later he successively served as the director of the "Qingmiao" () tax (i.e., taxation on young food crops) for Jiangxi Circuit (江西, headquartered in modern Nanchang, Jiangxi); the prefect of Fu Prefecture (撫州, in modern Fuzhou, Jiangxi); and the director of Rong District (容管, headquartered in modern Yulin, Guangxi).