In the annals of military history, confronting a formidable and entrenched enemy requires a meticulous, multi-layered strategy. As outlined in the Art of War, “when the enemy is strong and well-prepared, one must first exercise caution and avoid direct confrontation”, while maintaining strategic patience. Furthermore, diplomatic coordination is essential, as is the vigilant waiting for the enemy to make a misstep. “Only when the opponent exposes a critical vulnerability should one seize the opportunity to strike decisively”. The classic historical manifestation of this strategic principle is the Eastern Wu general Lü Meng’s masterful campaign to seize Jingzhou from the legendary Shu Han general Guan Yu.
The Zenith of Power and the Seeds of Ruin
During the autumn of 219 AD, Guan Yu was at the absolute zenith of his military career. Stationed in Jingzhou, his forces were exceptionally strong, and he had just achieved a monumental victory by capturing the formidable Cao Wei general Yu Jin and executing Pang De. His military prestige shook the very foundations of the empire, prompting the warlord Cao Cao to seriously consider relocating his capital to avoid Guan Yu’s invasion. Recognizing that Shu Han’s rising power threatened their own interests, the strategist Sima Yi advised Cao Cao to forge an alliance with Eastern Wu to counter Guan Yu.
Meanwhile, after the death of Lu Su in 217 AD, Lü Meng succeeded him as the Grand Commander of Eastern Wu and proposed an offensive strategy that differed from Lu Su’s. He advocated for the seizure of Jingzhou to achieve “complete control of the Yangtze River,” thereby safeguarding Eastern Wu’s strategic security and securing a vital strategic corridor for future northern expeditions.
What’s more, emboldened by his recent successes, Guan Yu showed no regard for diplomatic prudence. Facing a shortage of provisions for his newly captured 30,000 troops, he brazenly seized grain from Eastern Wu’s storehouses. This act of hostility, combined with lingering territorial disputes over Jingzhou, provided Sun Quan with the ultimate justification to strike.
As a result, Sun Quan agreed to Lü Meng’s proposal to seize Jingzhou and made the decisive move to abandon the Sun-Liu alliance and support Lü Meng in launching a surprise attack on Jingzhou.
The Art of Deception: Turning Strength into Vulnerability
Although Guan Yu was fiercely focused on capturing Fancheng, he was not entirely blind to the threat from Eastern Wu. Fearing that the Wu commander Lü Meng would attack his rear, he left a substantial garrison to defend Jingzhou. For an opponent as powerful as Guan Yu, Cao Cao’s strategy was to avoid his strength (强而避之), while Lü Meng’s strategy was rooted in the principle of “when the enemy is strong, be prepared” (实而备之), just as Sun Tzu outlined in the opening chapter of Art of War as mentioned in the beginning of this post above.
To capture Jingzhou, Lü Meng had to orchestrate a brilliant strategic deception to force Guan Yu to strip his rear defenses, thereby transforming his position from “strong” to “empty.”
Exploiting Guan Yu’s urgent need for reinforcements at the northern front, Lü Meng feigned a severe illness and returned to the capital, Jianye. He was replaced by the relatively unknown and untested young scholar, Lu Xun. Upon taking command, Lu Xun immediately initiated a masterful psychological campaign, writing a letter to Guan Yu dripping with sycophantic humility. Lu Xun professed his profound admiration for Guan Yu’s “majestic virtue” and assured the general that he would never dare to oppose him. Completely deceived by this feigned weakness, Guan Yu lowered his guard and transferred the bulk of his Jingzhou garrison to the northern front.
The Tragic Consequences of Hubris
Guan Yu’s arrogance proved to be fatal. With Jingzhou left virtually undefended, Lü Meng immediately launched a surprise campaign, capturing the strategic cities and severing Guan Yu’s retreat. The legendary general was ultimately captured and executed. The loss of Jingzhou was a catastrophic geopolitical disaster for Shu Han; it was the essential springboard for dominating the Central Plains, and its loss effectively ended Liu Bei’s hopes of unifying the empire. The ensuing chain of tragedies led to the deaths of Liu Bei and Zhang Fei, marking the end of their brotherhood.
The True Measure of a Master Strategist
The tragedy of Guan Yu perfectly illustrates a profound philosophical distinction in The Art of War. Sun Tzu posited that “the supreme art of war is to subdue the enemy without fighting,” and that “a truly masterful commander achieves victory without earning a reputation for wisdom or courage, a true master does not fight dramatic, bitter battles; they fight only when victory is assured and easy.”
Guan Yu, conversely, fought a hundred battles and won them all, only to be destroyed in a single catastrophic defeat. While popular folklore and literature have immortalized him as the ultimate paragon of martial virtue, loyalty, and wisdom, professional military strategists view his campaign through a different lens. His dazzling, hard-fought victories were ultimately a symptom of strategic overextension, making him a tragic figure whose legendary hubris cost his state its future.
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