Tianshui

Tianshui is a key Wei-held city in Kong Ming’s first Northern Expedition, and its defense introduces Jiang Wei as a commander capable of recognizing and countering Kong Ming’s stratagems. The city becomes the hinge of a contest in which forged messages and staged movements repeatedly alter who trusts whom: Shu’s initial attempts to capture Tianshui fail, but Kong Ming’s wider deception eventually leaves Jiang Wei isolated, and he surrenders. Tianshui then falls to Shu and becomes part of the army’s route deeper into Wei territory.

Strategic Setting

During the campaign, Tianshui is one of the major cities around Nan’an, alongside Anding. Kong Ming sees the region’s interconnected defenses as an opportunity: he plans to make the governors of Anding and Tianshui send forces to relieve Nan’an, then seize their cities as they are left exposed. The plan makes the roads between the cities and the flow of reports as consequential as their walls. A purported letter from Nan’an and the claim that Anding has already dispatched troops are intended to hurry Tianshui into joining the relief effort.

The reported emergency is not simply a lure for the governor. It places the city’s security in direct conflict with the duty to aid a neighboring force. At Tianshui, the officer Jiang Wei questions the apparent evidence before the army leaves. His intervention preserves the city’s defense and establishes that Kong Ming’s opponents are not merely passive recipients of his schemes.

The City’s Defense

Ma Zun, the governor of Tianshui, is preparing to send help to Nan’an when Jiang Wei argues that the messages are suspicious. If Nan’an is besieged, Jiang Wei reasons, it is difficult to explain how two messengers could have escaped; he also asks who Pei Xu is and whether anyone knows him. He concludes that the reports are a Shu trick and warns that Tianshui itself will be taken if its troops depart. Instead, he proposes a plan to capture Kong Ming and relieve Nan’an.

Jiang Wei’s countermeasure turns Kong Ming’s own method against him. False reports claim that the force Jiang Wei has led out to assist Nan’an is the only substantial body of troops in the area and that civilians remain in Tianshui. Zhao Zilong approaches the city expecting an opportunity to enter, but the apparent weakness conceals Jiang Wei’s force, which attacks from behind. Jiang Wei then charges at Zhao Zilong in the ensuing clash and forces him to retreat. The attempt to take Tianshui is stopped, and Kong Ming is angered to learn that Jiang Wei has outmaneuvered him.

The contest continues beyond the failed assault. Jiang Wei prepares for Kong Ming’s next attack by secretly placing troops outside the city while displaying flags and armed men on the walls. During the night, his soldiers light fires around the Shu encampment and make a great noise from the walls. The Shu troops, surprised and believing themselves threatened from multiple directions, scatter; Kong Ming escapes only because Zhang Bao and Guan Xing protect him and fight their way through the attackers. Tianshui’s defenses have now inflicted a second setback, this time by turning the besieging army’s uncertainty against it.

Kong Ming’s Counterstrategy

Kong Ming responds by widening the campaign around Tianshui. He sends Wei Yan toward nearby Jicheng, ostensibly to besiege it but in fact to seize Jiang Wei’s mother, whose importance follows from Jiang Wei’s reputation for filial devotion. At the same time, Kong Ming attacks Shanggui, Tianshui’s supply town, seeking to cut off its resources. Jiang Wei asks Ma Zun for permission to protect his mother and leaves with three thousand men; another three thousand are sent to defend Shanggui.

These movements give Kong Ming openings to manipulate the defenders’ beliefs about one another. Wei Yan appears to retreat, drawing Jiang Wei into Jicheng, while Zhao Zilong lets enemy troops enter Shanggui. Elsewhere, Kong Ming has captured Xiahou Mao and uses him as a messenger in a fabricated account of Jiang Wei’s supposed surrender. Xiahou Mao is told that Jiang Wei will yield Jicheng if he is released; supposed refugees then reinforce the false story. Xiahou Mao instead rides to Tianshui and tells Ma Zun that Jiang Wei has betrayed Wei.

In the night attack that follows, Shu troops approach Tianshui with a man disguised as Jiang Wei. The impersonator calls to Xiahou Mao and claims to have surrendered because of him, presenting the supposed defection as an accomplished fact. The confusion is deliberate: the real Jiang Wei is elsewhere, and Kong Ming is attacking Jicheng while its defenders’ attention is drawn toward Tianshui. The fabricated quarrel encourages the city’s defenders to see Jiang Wei as an enemy, even as Kong Ming’s forces make the danger at Jicheng real.

Fall and Campaign Consequences

Kong Ming’s maneuver succeeds at the cost of leaving Jiang Wei with no secure refuge. As the real Jiang Wei returns from his foray, Jicheng is already in Shu hands. He flees toward Tianshui, but the defenders fire arrows at him from the walls, convinced that he has joined the enemy. He turns toward Shanggui and is again denied entry because its commander shares the same suspicion. Forced to continue toward Chang’an, he encounters Guan Xing and his troops, and then Kong Ming, who blocks his path. Recognizing that he has been outmaneuvered and has nowhere left to turn, Jiang Wei surrenders.

His surrender changes the meaning of Tianshui’s defense. The officer who had twice foiled Kong Ming’s attempts to take the city now assists him in capturing it. Xiahou Mao and Ma Zun flee to safety in Qianghu, while Shanggui also falls after its commander concludes that there is no better option. With more soldiers joining the victorious Shu army, Kong Ming advances and establishes camp on the banks of the Wei River. Tianshui is therefore not just a stronghold taken in isolation: its fall helps convert a stalled operation into a renewed advance.

The episode makes control of Tianshui depend as much on credible information and mutual confidence as on the ability to defend a wall. Jiang Wei initially saves the city by scrutinizing reports that would have drawn its troops away; Kong Ming later defeats him by creating a sequence of false beliefs that separates him from the cities and forces he had defended. The city’s capture thus marks both the effectiveness of Kong Ming’s larger deception and the emergence of Jiang Wei as a formidable opponent whose skill, even in defeat, makes him valuable to the campaign that follows.