invasion Around 215, about six years after the Battle of Red Cliffs, Sun Quan had territorial disputes with his ally, Liu Bei, over southern Jing Province. Tensions between them nearly escalated to the point of armed conflict. However, after tense negotiations between Lu Su (Sun Quan's representative) and Guan Yu (Liu Bei's representative), both sides eventually agreed to divide southern Jing Province between their respective domains along the Xiang River. Guan Yu guarded Liu Bei's territories in southern Jing Province while Lü Meng was in charge of Sun Quan's. In 219, Lü Meng came up with a plan to help Sun Quan seize control of Liu Bei's territories in Jing Province. He pretended to be sick and asked for permission to return to Jianye to seek medical treatment. Sun Quan played along by pretending to approve his request. Lu Xun went to visit Lü Meng and said, "Guan Yu is near the border. How can we remain far behind the border and not worry about having to guard against him?" Lü Meng replied, "What you've said is true, but I'm seriously ill now." Lu Xun then said, "Guan Yu is proud of his own valour and he scorns others. He may have made great achievements, but he's overly conceited. Besides, he's heading north and he has never seen us a threat. When he knows you're sick, he'll definitely lower his defences. If we attack him when he lowers his guard, we can capture him. I came here to discuss with you a plan to attack him." Lü Meng replied, "Guan Yu is known for his bravery and ferocity in battle, and he's a formidable foe. Besides, he's in control of Jing Province. He governs with virtue and has made great accomplishments, while the morale of his army is at its peak. It won't be easy to defeat him." Succeeding Lü Meng When Lü Meng arrived in Jianye, Sun Quan asked him, "Who can replace you?" Lü Meng responded, "Lu Xun is careful and thoughtful. He has the ability to shoulder this important responsibility. Based on my observations of him, I believe he's capable of taking up greater responsibilities in the future. Besides, he's relatively unknown, so Guan Yu won't be wary of him. This can't be better. If he's appointed, our enemies will be unaware of our intentions, while we can assess our strengths better and seek an opportunity to