After Lu Su succeeded Zhou Yu, he passed by Monroe Barracks. Lu Su thinks that Monroe is just a warrior and has no strategy, so he doesn't plan to meet him. Someone said to Lu Su, "General Lu's reputation is becoming increasingly prominent. You shouldn't look at him with old eyes. You should go and see him. " So Lu Su went to Monroe. Lv Meng asked Lu Su, "You have a heavy responsibility and a close relationship with Guan Yu. What strategy are you going to use as a contingency plan? " Lu Su casually replied, "It depends." Lv Meng said: "Although Wu and Shu are now allied, Guan Yu is a general with both wisdom and courage. How can he not make a strategy in advance? " So he planned five coping methods for Lu Su. Lu Su left, walked beside Lv Meng, patted him on the back and said, "Lv Ziming, I have been away for three days. You should be impressed! I didn't expect you to have such a high talent and strategy. " So I visited Monroe's mother and became friends with Monroe.