《隋书·列传·卷八》
每每晋王杨广入朝，杨弘就代理扬州总管，等晋王回到扬州，杨弘又回蒲州。
每晋王广入朝，弘辄领扬州总管，及晋王归籓，弘复还蒲州。
Every time King Yang Guang of Jin entered the court, Yang Hong would act as the governor of Yangzhou. When King Jin returned to Yangzhou, Yang Hong returned to Puzhou.