《新唐书·列传·卷七十九》
李晟对内攻击景济，对外又抵抗朱滔等人的攻击，从正月到五月还不能解围。
晟内攻景济而外抗滔等，自正月至五月不解。
Li Sheng attacked Jing Ji internally and resisted the attacks of Zhu Tao and others externally. He could not lift the siege from January to May.