Li Dian
The force at Hefei was outnumbered because Xiahou Dun's force was stationed at Juchao (居巢; in present-day Chaohu, Anhui) and it would take time for help to arrive. Only 7000 men were at the fortress. Before Cao Cao left to attack Zhang Lu, he left his representative Xue Ti () with a letter that read "Open when the enemy arrives" on the envelope. As Sun Quan's army was already advancing towards Hefei, the defending generals opened the letter, which stated: "When Sun Quan arrives, generals Zhang (Liao) and Li (Dian) will engage him; General Yue (Jin) will remain behind to defend and not go into battle." This puzzled the generals, since it was well known that Li Dian and Zhang Liao had a personal feud, and Yue Jin lacked defensive experience, but was famous as the best vanguard in Cao Cao's forces. As the three of them did not get along well, Zhang Liao feared they might disobey orders. He said, "Our lord is away at war. By the time his reinforcements reach here, we're already done for. So he is actually instructing us to take advantage of the situation, when the enemy has just arrived and not fully gathered yet, to attack them and devastate their morale so as to calm our men and strengthen our defences. Victory or defeat, it all depends on this battle. Why are the two of you still hesitating?" Li Dian was moved and he said, "This is a national crisis. We'll see how your strategy works out. How can I let my personal affairs take precedence over my official duties?" Zhang Liao then selected 800 "die-hard" soldiers overnight in preparation for the upcoming battle, and threw a banquet for his men.