Introduction:
The Three Kingdoms (220-280) is a historical period connecting the Eastern Han Dynasty and the Western Jin Dynasty, which is divided into three regimes: Cao Wei, Shu Han and Sun Wu. Battle of Red Cliffs and Cao Cao were defeated by Sun Liu's allied forces, which laid the rudiment of the tripartite confrontation among the three countries.
In 220, Cao Pi usurped the Han Dynasty and proclaimed himself emperor, with the title of "Wei" and the history of Cao Wei, and the history of the Three Kingdoms officially began. The following year, Liu Bei continued the Han Dynasty in Chengdu, known as Shu Han in history. In 222, Liu Bei lost the battle of Yiling, and Sun Quan won most of Jingzhou. When Liu Bei died in 223, Zhuge Liang helped Liu Chan, the son of Liu Bei, reunite with Sun Quan. In 229, Sun rose, with the country name Wu, which was called Sun Wu in history. The area under his rule lived in the eastern part of the Three Kingdoms, so it was also called Soochow. At this point, the tripartite confrontation pattern of the three countries was formally formed.
In the following decades, Zhuge Liang and Jiang Wei of Shu Han led troops to the northern expedition of Cao Wei many times, but they never changed the pattern of tripartite confrontation. The real power in the late Cao Wei period was gradually controlled by Sima Yi. In 263, Si Mazhao of Cao Wei launched the war to destroy Shu, and Shu Han perished. Two years later, Si Mazhao died, and his son Sima Yan abandoned Emperor Wei Yuan to stand on his own feet. The founding name is "Jin", which is called the Western Jin Dynasty in history.
On May 1 day in 280 AD, Sun Wu perished in the Western Jin Dynasty and unified China. At this point, the Three Kingdoms period ended and the history of China entered the Jin Dynasty.