《隋书·帝纪·卷三》
不久江南高智慧等人聚众叛乱，高祖调炀帝任扬州总管，坐镇江都，每年进京朝见天子一次。
俄而江南高智慧等相聚作乱，徙上为扬州总管，镇江都，每岁一朝。
Soon after, Gao Zhihui and others in Jiangnan rebelled. Emperor Gaozu summoned Emperor Yang to serve as the governor of Yangzhou. He was based in Jiangdu and had to visit the capital once a year to pay homage to the emperor.