1 Xu You Xu You was from Nanyang County during the Three Kingdoms period. He was Yuan Shao's counselor and later defected to Cao Cao. He was killed for insulting Chu Xu with rude remarks. Xu You is a clever man. When he was under Yuan Shao, he often gave a lot of good advice. On the eve of the war between Yuan Shao and Cao Cao, it was suggested that Yuan Shao take Xu capital by light horse, so that Cao Cao could not take care of both ends, thus defeating Cao Cao in one fell swoop. However, Yuan Shao, who was stubborn by nature, ignored Xu You's suggestion instead. This made Xu You feel very angry and turned to his childhood friend Cao Cao in a rage. When Cao Cao heard that he was coming to defect to the enemy, he came out to meet him warmly without shoes, which made him feel very satisfied, and therefore told Cao Cao many military secrets about the Yuan Dynasty.
The most important of these secrets is where Yuan Shao's food and grass are. Yuan Shao has a lot of food and grass, all of which are hoarded in a place called Wuchao. Xu You suggested that Cao Cao send an iron horse to directly take away Wu Chao from Yuan Shao. Cao Cao is dubious, but Xu You knows Cao Cao like the back of his hand. He said to Cao Cao, you don't have much food and grass. If you want to defeat Yuan Shao, you must first win Wu Chao. Finally, Cao Cao adopted Xu You's suggestion and won the Wu Dynasty. When Yuan Shao and Wu Dynasty lost his troops, he was defeated and he could no longer fight Cao Cao. Although Xu You is very clever, he is always arrogant and often calls Cao Cao's nickname. Chu Xu, Cao Cao's general, was fed up and finally killed Xu You. Xu You's tricks were all good, but he was so arrogant that he finally killed himself.
Yang Xiu Yang Xiu was also from the Three Kingdoms period. Yang Xiu was smart and studious since childhood, and he was a famous writer in the late Eastern Han Dynasty. During Jian 'an period, he was promoted to Xiaozong, and later served as the main book of the Prime Minister's Office under Cao Cao. There are many allusions between Yang Xiu and Cao Cao, the most famous of which is chicken ribs. At that time, Cao Cao was fighting Liu Bei in Hanzhong. Because Liu Bei's army Ma Chao was brave and good at fighting, Cao Cao could not attack for a long time and gave up. So that night, I called the written pledge to fulfill a military order chicken ribs, sent to the ministries. Yang Xiu laughed when he heard the chicken ribs password, and immediately packed up and prepared to retreat. The sergeant asked in confusion, and Yang Xiu said? Chicken ribs are tasteless. What a pity to abandon them? The Prime Minister is going to withdraw his troops, so get ready. Cao Cao was furious when he heard Yang Xiu's words, and immediately ordered the thugs to kill Yang Xiu. Yang Xiuzhi's death was all due to disaster, but Cao Cao later regretted it. But it can't be redeemed.