《三国志·吴书·周瑜鲁肃吕蒙传》
后来吕蒙随从孙权在濡须抵御曹操，多次进献奇谋，又劝孙权在濡须口两面都建起堡坞，防御工事做得很细致，曹操无法攻克，只好撤军。
后从权拒曹公於濡须，数进奇计，又劝权夹水口立坞，所以备御甚精，曹公不能下而退。
Later, Lü Meng accompanied Sun Quan to resist Cao Cao at Ruxu. He repeatedly offered ingenious strategies and persuaded Sun Quan to build fortresses on both sides of the Ruxu mouth. The fortifications were very elaborate, and Cao Cao was unable to conquer them, so he had no choice but to withdraw his troops.