Runan serves as both a contested stronghold and a point of return in the novel’s shifting campaigns. Its fortunes connect Xuande’s precarious position between stronger powers with Guan Yu’s effort to rejoin his lord: first threatened by Lü Bu, Runan is later captured through a stratagem and becomes the destination toward which Xuande’s reunited companions march.

A target in Lü Bu’s campaign

When Lü Bu learns that Xuande has agreed to join Cao Cao in an attack against him, he responds by dispatching three armies. One is sent to seize Xiaopei from Xuande, another toward Runan and Yingchuan, and a third to join rebels on Mount Tai; Lü Bu leads a supporting force toward Xiaopei himself. Runan is thus introduced within a coordinated campaign designed to pressure Xuande on several fronts, rather than as an isolated objective.

The city’s strategic importance recurs amid the conflict between Cao Cao and Yuan Shao. During celebrations after a battle, Cao Cao hears that a new Yellow Headband army is ravaging Runan. Guan Yu is authorized to lead troops against the rebels, setting in motion the episode that will transfer control of the city and alter his prospects of reunion with Xuande.

Guan Yu’s capture of the city

At Guan Yu’s camp, two captured spies include Sun Qian, an adviser to Xuande. Sun Qian explains that the Yellow Headband leaders Liu Pi and Gong Du want to join Yuan Shao in fighting Cao Cao. He proposes that they pretend to be defeated and draw Guan Yu after them, enabling him to capture Runan and then leave Cao Cao’s side to join Xuande and the two women under Guan Yu’s protection.

The plan succeeds: the rebels feign defeat, and Guan Yu takes Runan. He returns in triumph to Cao Cao’s capital, but the capture has opened a route toward a different allegiance. When Xuande’s wives challenge him for seeming to have forgotten their lord, Guan Yu admits that Xuande is alive and with Yuan Shao, while insisting that the information must remain secret until an escape can be arranged. Runan’s capture therefore brings Guan Yu nearer to his objective without immediately resolving the danger surrounding him and the women.

A destination for the reunited force

After Xuande and his companions are reunited, he decides that their combined force—about five thousand men—should march to defend Runan. Liu Pi and Gong Du ask for their help at that moment, and the group sets out, enlarging its ranks with recruits along the way. The movement toward Runan links the city’s earlier role in Guan Yu’s capture to Xuande’s return to active campaigning: it is now a place the reunited force intends to defend, not merely a target in a rival’s plan.

Place in the wider landscape of conflict

Runan’s repeated appearances give it a practical role in the story’s changing military geography. It lies among the locations threatened as Lü Bu divides his forces, is ravaged by rebels during the struggle between Cao Cao and Yuan Shao, and is then taken by Guan Yu through cooperation with those same rebels. Its control shifts through military pressure and deception, while its value to Xuande’s party rests in the opportunity it offers to regroup and resist. Across these reversals, Runan marks how a contested city can become, in turn, a threatened possession, a strategic prize, and a destination for a returning force.