Cao Cao.
Cao Cao, Emperor Wu of the Wei Dynasty (155 AD - March 15, 220 AD), whose real name was Ji Li, whose courtesy name was Mengde, and whose nickname was Ah Ma, was from Qiao, the governor of Yuzhou (now Bozhou, Anhui Province). He was an outstanding statesman, strategist, writer, and calligrapher in the late Eastern Han Dynasty. He was the founder of Wei during the Three Kingdoms period and the son of Taiwei Cao Song.
With his Xiaolian origin, he eliminated the separatist forces such as Yuan, Lu Bu, Liu Biao, Ma Chao, and Han Sui, surrendered the Southern Xiongnu, Wuhuan, Xianbei, etc., and basically unified northern China, implemented effective policies, and restored the economy. Production and stabilizing social order, expanding farmland, building water conservancy, rewarding mulberry farming, attaching importance to handicrafts, resettling the exiled population, and implementing "rent modulation" to promote political stability in the Central Plains region.
Extended information:
Political Measures
1. Punish powerful men
Cao Cao tried to use stricter laws when he started his official career Change the situation where powerful people were rampant. Because the trouble lies in the center, Cao cannot carry out his intentions. Only after he took control of the political power did he have to fully implement the policy of rule of law to restrain the powerful. After Cao won Jizhou, he immediately "emphasized the method of annexation by powerful powers", thus achieving the effect of making "the people happy".
2. Meritism
In the selection of officials during the Han Dynasty, the selected people must have feudal moral qualities such as benevolence, justice, filial piety and brotherhood, as well as a noble family background. Cao Cao does not pay attention to false reputations when appointing people. He selects officials who must "understand legal principles" and be able to implement the rule of law. Social atmosphere has improved. From 210 to 217, he issued three "orders to seek talents" to select and appoint some talented people. Break the concept of family status, recruit people from the middle and lower classes of the landlord class, restrain the powerful, and strengthen the centralization of power.
3. Cherish the generals
As for the generals, Cao Cao was out of the ban and was happy to march in the formation. He took Zhang Liao and Xu Huang among the captives and served his orders. For meritorious service, he was listed as a famous general. Cao Cao was able to use the strengths of his generals based on their characteristics.
4. Implementing farming
Between the Han and Wei dynasties, social production suffered serious damage and there was a great famine. During this period, food supply became the biggest problem for various military groups. There were countless people who were invincible and self-defeating due to insufficient military food. Cao Cao cultivated fields in the north and built water conservancy projects, which solved the problem of lack of military rations and played a certain role in restoring agricultural production.
Baidu Encyclopedia——Cao Cao