Lü Meng
In 210, after Lu Su succeeded Zhou Yu (who died of illness earlier that year) as the frontline commander of Sun Quan's forces, he passed by Lü Meng's garrison on his way to Lukou (陸口; at Lushui Lake near present-day Chibi, Hubei). Lu Su had all along regarded Lü Meng with contempt, but someone told him: "General Lü's fame and glory are increasing day by day. You shouldn't view him in the same light now as you did in the past. You should visit him soon." Lu Su then headed to Lü Meng's camp. After some drinks, Lü Meng asked Lu Su, "You have received an important appointment and you are going to be stationed near Guan Yu. Have you made any contingency plans to deal with unforeseen circumstances?" Lu Su lackadaisically replied, "I will adapt to the situation when the time comes." Lü Meng then said: "The east and the west may be one family now, but Guan Yu is a person with the might of bears and tigers. How can you not make preparations beforehand?" Lü Meng then proposed five strategies to Lu Su on how to deal with Guan Yu. Lu Su left his seat, came closer to Lü Meng, placed his hand on his shoulder and said, "Lü Ziming, I never knew you had such insights until I came here." He also visited Lü Meng's mother and became friends with Lü Meng.