Empty City Stratagem

The Empty City Stratagem is Kong Ming’s calculated bluff at Xicheng, where an exposed supply depot and a tiny defending force faced an overwhelmingly larger army. Rather than attempt to meet Sima Yi in open battle, Kong Ming made the city look so unconcerned and unguarded that its vulnerability seemed suspicious. The stratagem turned the enemy’s uncertainty into a retreat, then gave the Shu army room to withdraw toward Hanzhong.

Crisis at Xicheng

The crisis followed the defeat at Jieting. Ma Su had ignored Wang Ping’s advice to defend the road and instead occupied a hill, where his men were cut off from water and surrounded. Their force broke apart; attempts to recover Jieting and Lieliu failed, and the Shu army suffered further losses. After receiving Wang Ping’s map and news of the falls, Kong Ming hurried to Xicheng, where Shu supplies were stored.

The danger was extreme: Kong Ming had just five thousand men, while Sima Yi advanced with one hundred and fifty thousand. The city’s importance as a supply location made its loss especially pressing, but its small garrison could not safely confront the approaching army. The stratagem arose from this mismatch between the need to hold the position and the inability to defend it conventionally.

The Feigned Emptiness

Kong Ming ordered his men to remove banners and other visible signs of occupation, conceal themselves, and keep silent. He then appeared on the city wall in his customary Daoist robes, accompanied only by two boys. There he played a lute as if the approaching army posed no immediate threat. The open gates and the absence of visible defenders reinforced the impression of a city that was either strangely careless or deliberately inviting entry.

When Sima Yi rode up and saw the scene, he became concerned that the apparent lack of precautions concealed an ambush. He did not test the open gates or press an assault. Instead, persuaded that the calm was itself a warning, he ordered his much larger army to turn aside. The stratagem succeeded not by concealing the city’s weakness behind a visible show of force, but by making that weakness look too conspicuous to trust.

Retreat and Narrative Significance

Kong Ming had also planned a series of ambushes along the retreating Wei army’s route. After defeating it, he ordered the Shu army to withdraw toward Hanzhong. The episode therefore bought more than a momentary reprieve: it helped the army escape the immediate danger at Xicheng and shaped the enemy’s retreat into an opportunity for further attack.

The contrast with Ma Su’s failure gives the episode particular force. At Jieting, confidence in book learning displaced practical counsel about the road and the army’s position; at Xicheng, Kong Ming responded to military weakness by controlling what the enemy could see and how it might be interpreted. The lute and the open gates become instruments of command: Sima Yi’s superior numbers cannot settle what the scene means, and his caution gives Kong Ming the opening to withdraw. The account presents the stratagem as a decisive contest of judgment under pressure, not as a conventional victory in which the smaller force defeats the larger in direct combat.