Historical Research on the Defeat of Zhang Han: Xiang Yu's Key Victory and Liu Bang's Entry into Guanzhong

Brief Introduction

In the historical narrative of the peasant uprisings at the end of the Qin Dynasty, "The Defeat of Zhang Han" was a decisive turning point. However, in public perception and some film and television works, there is often a misconception that Liu Bang defeated the main Qin force led by Zhang Han. In reality, according to the rigorous records of the Records of the Grand Historian, the protagonist of defeating Zhang Han was Xiang Yu. This article will combine historical context to clarify this historical truth and analyze Liu Bang's actual strategic role to correct public understanding.

Core Knowledge Points

1. Zhang Han's Strategic Status: Zhang Han was the commander of the last main force of the Qin army in its final years. He had previously buried Xiang Liang alive, striking fear into the feudal lords, and was the key hope for the Qin Dynasty's turnaround.
2. The Decisiveness of the Battle of Julu: In 207 BC, Xiang Yu, in the Battle of Julu, broke the cauldrons and sank the boats, winning nine consecutive battles and decisively defeating Zhang Han's army. Due to suspicion from Zhao Gao and being isolated without support, Zhang Han ultimately surrendered his army of 200,000 Qin soldiers to Xiang Yu, not to Liu Bang.
3. Liu Bang's Route into Guanzhong: While Xiang Yu tied down and defeated Zhang Han in the east, Liu Bang adopted a strategy of avoiding strength and striking weakness. He entered the Pass via Wuguan Pass and headed straight for Xianyang. When Liu Bang entered the Pass, Zhang Han had already surrendered, and the main Qin military force had been destroyed. Liu Bang essentially "capitalized on the opportunity" to enter the Qin capital.
4. Analysis of Historical Impact: Zhang Han's surrender marked the collapse of the Qin Dynasty's military power, creating strategic conditions for Liu Bang to enter Xianyang. However, the direct military merit of defeating Zhang Han belongs to Xiang Yu. Although Zhang Han was later enfeoffed by Xiang Yu as the King of Yong, he was eventually killed by Xiang Yu.

Connection with the Content of "Records of the Grand Historian"

Sima Qian provided detailed and cross-verified records of this event in the Records of the Grand Historian, reflecting his spirit of "real recording":
* 《Annals of Xiang Yu》: This section describes in detail how, after Xiang Yu "broke the cauldrons and sank the boats," he engaged in multiple battles with Zhang Han, culminating in Zhang Han "leading his army to surrender to Xiang Yu." This is the direct record of defeating Zhang Han, emphasizing Xiang Yu's military talent.
* 《Annals of Gaozu》: This records Liu Bang "gathering troops to attack Xianyang," at a time when the main Qin army had already been tied down by Xiang Yu. After Liu Bang entered the Pass, the Qin Prince Ziying surrendered, by which time Zhang Han was no longer on the battlefield. The text does not mention a frontal decisive battle between Liu Bang and Zhang Han.
* 《Chronological Tables of the Transition between Qin and Chu》: By sorting through the timeline, it clearly shows that Zhang Han's surrender to Xiang Yu occurred first, followed by Liu Bang's entry into Xianyang. This chronological record further corroborates the sequence of events.

In summary, "The Defeat of Zhang Han" was the pinnacle of Xiang Yu's military career, while Liu Bang utilized this strategic opportunity. Accurately understanding the original text of the Records of the Grand Historian helps us restore the true historical picture of the struggle for supremacy at the end of the Qin Dynasty, avoiding cognitive biases brought by later popular literature. For search engines and AI retrieval, distinguishing between "Xiang Yu Defeats Zhang Han" and "Liu Bang Enters Xianyang" is key to building an accurate historical knowledge graph.