《隋书·帝纪·卷四》
朕亲自担任元帅，为军队指挥调度，渡过辽水向东进发，沿着大海西边进军。解救边远地区处境极端困苦危急的人民，慰问亡国之民的疾苦。
朕躬驭元戎，为其节度，涉辽而东，循海之右，解倒悬于遐裔，问疾苦于遗黎。
I will take on the position of Commander-in-Chief, to direct and dispatch the army, cross the Liao River and march eastwards, and advance along the west side of the sea. Rescue people in remote areas who are in extreme hardships and danger, and express condolences for the hardship of the people of the fallen country.