The battle of Guandu was one of the "three major battles" in the last years of the Eastern Han Dynasty, and it was also one of the famous battles in the history of China. In the fifth year of Jian 'an (200 years), Cao and Yuan fought a strategic decisive battle in Guandu. Cao Cao raided Yuan Jun's granary in Wu Chao, and then defeated Yuan Jun's main force. This battle laid the foundation for Cao Cao's unification of northern China. In this campaign, Cao Cao chose a good strategy, coordinated attack and defense, made many surprise attacks, and skillfully attacked it with fire, which burned up Yuan Jun's grain and grass, played an important role in victory, and concentrated on Cao Cao's excellent military strategy and command ability. This is a famous example in the history of China.

The Battle of Feishui was a decisive battle in a series of invasion and annexation campaigns launched by Qin before the northern unified regime in the Eastern Jin Dynasty. As a result, the pre-Qin Dynasty, which occupied an absolute advantage, lost to the Eastern Jin Dynasty, and the country declined and perished. The northern nationalities broke away from the pre-Qin rule and successively established more than a dozen small countries. The Eastern Jin Dynasty used this Northern Expedition to push the border line to the Yellow River, and there was no foreign invasion in the Eastern Jin Dynasty for decades.

Battle of Red Cliffs was a famous battle in the last years of the Eastern Han Dynasty. In the 13th year of Jian 'an, Sun Quan and Liu Bei defeated Cao Cao's army in Chibi area of the Yangtze River, which laid the foundation for the tripartite confrontation among the three countries. This is one of the most famous wars in the history of China, and it is also the most famous one among the "three major battles" in the Three Kingdoms period. It is also the first large-scale battle in the Yangtze River basin in China history, which indicates that China's military and political center is no longer limited to the Yellow River basin.

The Battle of Julu was a major decisive battle in Julu (now Pingxiang, Hebei Province). Xiang Yu led tens of thousands of Chu troops (later governors and insurgents also participated in the war) and led more than 400,000 troops with the generals of Qin and Wang Li, which was also one of the famous battles in China history.