Cao Cao, an outstanding politician, strategist, writer and calligrapher at the end of the Eastern Han Dynasty, was the founder of the Cao Wei regime in the Three Kingdoms period. Conquering the Quartet in the name of Emperor Wu of the Han Dynasty eliminated the separatist forces such as Er Yuan, Lu Bu, Liu Biao, Ma Chao and Han Sui at home, surrendered the southern Xiongnu, Wu Huan and Xianbei abroad, unified the northern part of China, and implemented a series of policies to restore economic production and social order, which laid the foundation for the establishment of Cao Wei. Cao Cao was the prime minister of the Eastern Han Dynasty before his death, then Wang Wei, and after his death, posthumous title became King Wu. After his son Cao Pi proclaimed himself emperor, he was honored as Emperor Wu, with the temple name Mao. & gt Where do idioms come from?
Biography of the Three Kingdoms, Shu Wei Yu Xun: "Today's harvest in the East is to consolidate the wall and clear the field for the generals. If the generals don't attack with perseverance, they will get nothing. Within ten days, 100 thousand people were trapped without fighting. " Historical allusions to the wilderness
At the end of the Eastern Han Dynasty, Cao Cao occupied Yanzhou after suppressing the Yellow Scarf Army, and then moved eastward to capture Xuzhou. & gt Zhang Miao, a strongman in Yanzhou, took the opportunity to collude with Lu Bu, a separatist force, and broke through most parts of Yanzhou in one fell swoop, occupying the important town of Puyang. Cao Cao rushed back from Xuzhou and launched a counterattack against Lu Bu stationed in Puyang. Lu Bu was fierce, and the two sides were deadlocked for a long time. Cao Cao couldn't win at the moment. & gt At this moment, Tao Qian, the commander of Xuzhou, died of illness and gave Xuzhou to Liu Bei. Cao Cao was even more impatient and decided to seize Xuzhou first and then come back to destroy Lu Bu. Counselor Yu Xun came to dissuade him. & gt He said to Cao Cao, "When Liu Bang, Emperor Gaozu, fought for the world, he should first guard the Guanzhong; When Emperor Guangwu Liu Xiu pacified the world, he first occupied Hanoi. They do this in order to control the world, which is deeply rooted. So although they also suffered some setbacks and failures, they finally succeeded because they didn't lose their roots at all. In the same way, Yanzhou is your foundation. Although it is broken, it is easier to save strength. Xuzhou, on the other hand, is said to have organized manpower to grab and cut wheat outside the city and transport it to the city, which shows that they are prepared for possible battles. After harvesting the grain, the other side will inevitably strengthen the fortifications and strengthen the camp, waiting for you to hit him. If we really send troops to attack Xuzhou now, then it will be impossible to attack and there will be no gains. Within ten days, the whole army was defeated without fighting. After weighing the pros and cons, I think it's better not to hit Xuzhou first. Please think it over. " & gt After listening to Yu Xun's suggestion, Cao Cao felt that it was very reasonable, so he cancelled the plan to attack Xuzhou and concentrated on fighting Lu Bu. Soon, Cao Cao defeated Lu Bu and pacified Yanzhou. & gt