How a clever ruse and a show of force ended a massive siege in 234
In 234, the state of Eastern Wu launched a three-pronged assault against Cao Wei, with Sun Quan personally leading 100,000 troops against the fortress of Xincheng. Despite the overwhelming numbers, the Wei defense succeeded not through brute force, but by orchestrating a psychological illusion that forced a total retreat.
The conflict emerged from a strategic alliance between Shu Han and Eastern Wu, both seeking to dismantle the power of Cao Wei. In March 234, Shu chancellor Zhuge Liang initiated his fifth Northern Expedition, prompting Sun Quan to coordinate a massive synchronized strike. By June or July, Wu forces were advancing from three directions: Sun Quan targeted the fortress of Xincheng at Hefei, while other generals pushed toward Xiangyang and the Guangling-Huaiyin region.
The defense of Xincheng became a point of intense debate within the Wei court. General Man Chong advocated for aggressive reinforcement, but officials like Tian Yu and Liu Shao urged caution, fearing the Wu army's high morale. Liu Shao proposed a brilliant deception: rather than sending a massive relief force, the court would dispatch a modest contingent of 5,000 infantry and 3,000 cavalry. By spacing these troops widely and deploying an abundance of flags, banners, and war drums, they aimed to project the image of a much larger approaching army.
Emperor Cao Rui approved this strategy, personally leading a naval fleet to support the effort. The psychological warfare proved effective. As the Wei relief force neared, the Wu army faced mounting internal struggles, including widespread illness among the ranks. The death of Sun Quan’s nephew, Sun Tai, during a skirmish involving burning siege engines further dampened morale. Upon learning of the Emperor’s approach, Sun Quan ordered a full withdrawal. The other Wu armies, hearing of the retreat, abandoned their own offensives shortly thereafter. This engagement marked the final major attempt by Wu to capture Hefei during Sun Quan’s reign, demonstrating how strategic perception could outweigh sheer numerical superiority in the volatile landscape of the Three Kingdoms period.
Source: Battle of Hefei (234)
