鲁肃
At Yiyang, Lu Su invited Guan Yu to attend a meeting to discuss the dispute. During the negotiations, both sides stationed their soldiers more than 100 paces away from the meeting area and the officers present at the talks were each armed with only a blade weapon. Lu Su told Guan Yu: Before Lu Su could finish what he was saying, an unnamed person interrupted him and said: "Whoever has the ability to govern the land shall have control over it. Isn't it so?" Lu Su angrily rebuked that person in a firm and stern tone. Guan Yu drew his sword, stood up and said, "This is a state-level problem. We can't hope to understand it." He left after that.