[The Repression of Dong Zhuo] In 189, after Yellow Turban Rebellion, Eastern Han Dynasty only existed in name. In center, emperor turned into a puppet. In these parts, princes divided their regimes. Yi Dong Zhuo led an army to kidnap Emperor Xian of Han Dynasty at Chang'an. In 190, under auspices of Yuan Shao, princes of Eighteenth Path of Kanto attacked Dong Zhuo together. But the princes of all walks of life had their ghosts, and no one wanted to send troops, only Cao Cao behaved differently.
[Princely hand-to-hand combat] In 192, Dong Zhuo was killed, and contradictions between Kwantung princes were officially made public, and whole country plunged into hand-to-hand combat. After years of hand-to-hand combat, only Sun Ce of Jiangdong, Liu Biao of Jingzhou, Liu Zhang of Yizhou, Han Sui, Ma Teng, Gunsundu of Liaodong, Yuan Shao of Jizhou, and Cao Cao of Yanzhou remained among country's greatest princes. Among these forces, Yuan Shao occupies four prefectures of Ji, Bing, Qing and Yu and is most powerful.
[The Rise of Cao Cao] In 196, Emperor Xian of Han fled back to Luoyang. Cao Cao took advantage of this opportunity, welcomed Emperor Xian, and moved capital to Xuchang, "taking emperor with him to command princes." Cao Cao improved talent management of officials, promoted economic recovery and made Cao Cao strong, defeated Lu Bu, Zhang Xu, Yuan Shu and Li Jue, controlled Yanzhou, Xuzhou and Guanzhong. At same time, Yuan Shu sent Sun Ce to govern Jiangdong, which laid foundation for Sun family to gain a foothold in Jiangdong.
[Unite North] After 200 years, Yuan Shao led an army to conquer Cao Cao in south, and both sides fought at Guandu. As a result, Cao Cao defeated Yuan Shao's army of 100,000 by a force of one to ten. Thereafter, Cao Cao proceeded to sweep away Yuan Shao's remaining forces, and by 207 Cao Cao had largely unified north. In south, Sun clan was gaining strength, and Liu Bei began to gain a foothold in Jingzhou.
[Battle of Chibi] After unifying north, Cao Cao led an army south in an attempt to unite entire country. At this time, Liu Biao died, his son surrendered, and Cao Cao was able to occupy northern part of Jingzhou. Cao Cao fought against allied forces of Sun and Liu in Chibi and Cao Cao was defeated. After that, Sun Quan occupied eastern part of Jingzhou, and Liu Bei occupied the southern part of Jingzhou.
[Three Kingdoms] After Battle of Chibi, Cao Cao saw that he was temporarily unable to unite south, so he continued to develop in north, defeated Han Sui, Ma Chao, Zhang Lu, etc., occupied Guanzhong, Liangzhou and Hanzhong, and united more north. Liu Bei also acted according to Zhuge Liang's plan, occupying five counties of Jingzhou and Yizhou. In 215, Sun Luping divided Jingzhou. In 219, Liu Bei defeated Cao Cao at Hanzhong. At this time, position of three points of world formally took shape. After that, Cao Pi, Sun Quan and Liu Bei began to openly proclaim themselves emperors, and Three Kingdoms were formally formed.
[Consolidation of Three Kingdoms] Shortly after creation of Three Kingdoms, Battle of Yiling took place, resulting in loss of Shu Han and Jingzhou. After that, Zhuge Liang pacified Nanzhong, mastered Southwest and strengthened regime; Sun Wu continued to expand into Yangzhou to include Lingnan area; Cao Wei annexed lands of Gongsun Yuan and incorporated western regions.
[The Three Kingdoms Return to Jin] In 249, Gaoping Mausoleum of Wei State came into being, and Sima family came to power, and Wei State survived only nominally; in 263, Sima family destroyed Shu Han; So far, Jin Sima dynasty has unified Three Kingdoms.