In 220, Cao Pi usurped the Han Dynasty and proclaimed himself emperor, making Luoyang the capital. The name of the country is Wei, and the history of the Three Kingdoms officially began. In the second year, Liu Bei ascended the throne and established Chengdu, known as Shu Han in history. In 222, Liu Bei lost the battle of Yiling, and Sun Quan won most of Jingzhou. After Liu Bei's death in 223, Zhuge Liang helped Liu Bei's son Liu Chan reunite with Sun Quan.
In 229, Sun Quan ascended the throne, Jianye established its capital, with the title of Wu, which was called Wu in history. At this point, the three countries were formally established. In the following decades, Zhuge Liang and Jiang Wei of Shu Han led troops to attack Cao Wei many times, but they failed to change the pattern of confrontation among the three parties.
In the late Wei Dynasty, Sima Yi gradually gained real power. In 263, Si Mazhao of Cao Wei launched the Wei-Shu War, and Shu Han died. Two years later, Si Mazhao died of illness.
His son Sima Yan abolished Wei Yuan and became emperor on his own. People's Republic of China (PRC) was called "Jin" when it was founded, and it was called the Western Jin Dynasty in history. In 280 AD, the Western Jin Dynasty destroyed Soochow and unified China. At this time, the Three Kingdoms period ended and entered the Jin Dynasty.
Extended data:
At the end of the Eastern Han Dynasty, because of natural disasters and wars, society was destroyed, which led to economic recession and a large number of agricultural land was abandoned. Some powerful clans led their clans to build docks for self-defense.
After engaging in production activities around it, it gradually became a self-sufficient manor system. Both the dock castle and manor system influenced the economic model in Wei, Jin, Southern and Northern Dynasties.
Due to the collapse of the court in the Eastern Han Dynasty, the worn-out copper coins were not recast, and a large number of private money appeared. After the establishment of the Three Kingdoms, the newly issued copper coins were not widely used, so we had to officially use cloth, grain and chestnuts as the main currencies.
Among Cao Wei, Shu Han and Sun Wu, Cao Wei has the largest population and the widest reclamation area, which is also the reason why Cao Wei was the strongest among the three countries at that time. Cao Wei carried out the system of reclaiming farmland and organized refugees to reclaim official land.
This restored social order and strengthened the strength of Cao Wei. Another evidence that Cao Wei attaches importance to agriculture is its large-scale water conservancy construction, and its project scale and quantity are second to none among the three countries.
Baidu Encyclopedia-Three Kingdoms