Hebei drunk, angrily beheaded Cao Zang six generals; Jiangnan went to dinner and laughed at Lu Su for three cups. Please name the person who praised this couplet and briefly describe what was written

Hebei drunk, angrily beheaded Cao Zang six generals; Jiangnan went to dinner and laughed at Lu Su for three cups. Please name the person who praised this couplet and briefly describe what was written in it. Guan Yu, Guan Yunchang First: In the fifth year of Jian 'an, Yuan Shao sent general Yan Liang to lead an army to besiege Baima. Cao Cao led150,000 soldiers to fight. Cao Cao lost the first battle and was beheaded by Yan Liang. Cao Cao was invincible, so Guan Yu got on the horse. He reversed the dragon crescent moon blade and rode into the enemy line. Yan Liang was caught off guard and beheaded by Guan Yu. Guan Yu cut off Yan Liang's head, tied it under the horse's neck, and went out with a knife, like nobody's business. Hebei soldiers were frightened and lost their souls, and they were in chaos without fighting. Cao Jun seized the opportunity to attack and won a great victory. Second: Guan Yu was guarding Jingzhou, and Lu Su invited him to the meeting. Lu Su tried to recapture Jingzhou at the banquet. Guan Yu did not agree, so he came down and killed him. Guan Yu knew it was a plan, but he still crossed the river calmly to attend the meeting. He only brought a big knife and a few followers. When the wine was hot, Lu Su mentioned the return of Jingzhou. Guan Yu pretended to be drunk and said politely, please come to Jingzhou for a meeting tomorrow and discuss this matter again! Guan Yu walked towards the river with a knife in his left hand and Lu Su in his left. Lu Su's Monroe, Gan Ning and others wanted to act according to the plan, but when they saw Guan Yu holding a knife in one hand and Lu Su in the other, they were afraid to hurt Lu Su. It was not until Lu Su got on his boat by the river that Guan Yu let him go. Lu Su was scared out of her wits. The couplet refers to Guan Yu! ! !