The brotherhood relationship between Guan Yu and Zhang Fei

The sworn brotherhood of Guan Yu and Zhang Fei is a bond grounded in a shared vow and tested by separation, divided loyalties, and incomplete information. Its most revealing crisis comes when Zhang Fei believes Guan Yu has betrayed Liu Bei by submitting to Cao Cao; their reunion at Gucheng turns suspicion into recognition and restores the brothers’ alliance. The episode makes brotherhood more than affection: it is an obligation to protect one another, to safeguard Liu Bei’s family, and to remain loyal to the cause they swore to serve.

The vow as an obligation

The brothers’ relationship is shaped by their joint vow in the Peach Orchard. When Guan Yu considers dying rather than submit after being surrounded, Zhang Liao argues that death would violate the responsibilities attached to that oath. He reminds Guan Yu that he and his brothers had pledged to die together, but that Liu Bei might survive and still need his help. Guan Yu has also been entrusted with Liu Bei’s wives; dying would leave them without his protection. Finally, the brothers swore to protect the Han dynasty, a commitment Zhang Liao says would be abandoned if Guan Yu chose a pointless death. His advice recasts submission not as an end to brotherhood, but as a means of preserving its duties.

The distinction matters when Guan Yu later meets Zhang Fei. Zhang Fei judges loyalty by whether a man will die rather than accept dishonour, while Guan Yu’s conduct has followed a more complicated obligation: to keep Liu Bei’s household safe while separated from his brother. The reunion dramatizes how the same ideal of fidelity can yield opposing judgments when one brother knows only the appearance of the other’s actions.

Separation and the journey to Gucheng

Guan Yu travels for many days with Liu Bei’s two wives. Along the way, a band of former Yellow Headband rebels turned robbers confronts the party. Their leader, Zhou Cang, recognizes Guan Yu, dismounts, kneels, and asks to join him. The journey is therefore not simply a passage between brothers: Guan Yu continues to gather allegiance even while the brothers remain apart.

At Gucheng, Guan Yu learns that a fierce warrior has expelled the governor and taken control of the city. It is Zhang Fei, who has recruited an army, secured provisions, and established authority in the surrounding area. Confident that his brother will welcome him, Guan Yu sends Sun Qian ahead to announce that he has arrived with Liu Bei’s wives. The message brings Zhang Fei out at the head of a thousand horsemen, but the expected greeting never comes: Zhang Fei charges at Guan Yu with his spear raised, treating him as an enemy.

Suspicion and proof

Zhang Fei’s anger rests on what Guan Yu’s absence appears to mean. He accuses his brother of betraying Liu Bei by surrendering to Cao Cao, accepting a position at Cao Cao’s court, and receiving his gifts. Guan Yu appeals to their Peach Orchard vow, but Zhang Fei answers that a virtuous man cannot serve two masters. In his view, Guan Yu’s continued life under Cao Cao has already dishonoured their shared commitment.

Liu Bei’s wives interrupt that judgment with the circumstances Zhang Fei lacks. They explain that Guan Yu had no idea where either Zhang Fei or Liu Bei was; they had been compelled to remain with Cao Cao, and left as soon as Cao Cao discovered that Liu Bei was at Runan. They also describe how Guan Yu protected them throughout a difficult journey. Their testimony supplies the missing context: what Zhang Fei reads as willing allegiance was, from the women’s account, part of a separation endured while Guan Yu guarded the people entrusted to him.

Guan Yu then offers a public test of his honesty. A large force approaches, and he asks Zhang Fei to let him prove his account by killing its leader within the time of three rolls of the war drums. The approaching commander is Cai Yang, who accuses Guan Yu of killing his nephew and says the prime minister has ordered his arrest. Zhang Fei takes up the drumsticks; before he can complete even one roll, Guan Yu kills Cai Yang. The troops begin to flee, and a captured junior officer reveals that Cao Cao’s army was actually bound for an attack on Runan. Cai Yang’s encounter with Guan Yu was accidental, and he had tried to turn it to his own advantage.

Zhang Fei does not accept the proof on appearance alone. He interrogates the captured officer thoroughly, and only when the account satisfies him does he believe that Guan Yu has spoken truthfully. The episode makes reconciliation depend on more than a brother’s appeal: the wives’ testimony, Guan Yu’s action, and the prisoner’s explanation together resolve the misunderstanding.

Reconciliation and renewed fellowship

Once Zhang Fei is convinced, the brothers enter Gucheng together. They spend the day celebrating and recounting what has happened to them since they were last united. The gathering also settles their immediate responsibilities: Guan Yu and Sun Qian will travel to find Liu Bei, while Zhang Fei remains in the city to protect Liu Bei’s wives. The reunion thus repairs their personal bond while returning them to the practical work of safeguarding Liu Bei’s household and reassembling his scattered followers.

The search does not immediately succeed. Guan Yu and Sun Qian reach Runan only to learn that Liu Bei has already left to consult Yuan Shao, so they return to Gucheng disappointed. They again agree that Guan Yu and Sun Qian will seek Liu Bei while Zhang Fei guards the city and the women. Their continued cooperation, despite this setback, shows that the earlier accusation has not permanently broken the brotherhood. The danger of travelling into Yuan Shao’s territory, where Guan Yu is wanted for killing two of Yuan Shao’s leading commanders, makes secrecy essential; before entering that territory, Sun Qian persuades Guan Yu to shelter at a nearby farm while he goes ahead to find Liu Bei.

The brothers’ reunion becomes complete when Liu Bei returns to Gucheng with Zhao Zilong and his band of warriors. Liu Bei and Zhang Fei greet one another joyfully, and each brother recounts the adventures he has endured. They sacrifice an ox and a horse to Heaven and Earth and celebrate together; Guan Ping’s addition to their company is also welcomed. In this scene, the recovery of the brotherhood expands into the renewal of the larger fellowship around Liu Bei.

Narrative significance

The episode gives the Peach Orchard vow a dramatic test: physical separation allows outward appearances to obscure the intentions that the vow is meant to bind. Zhang Fei’s accusation is serious precisely because brotherhood in this story carries public and familial duties, not only private attachment. Guan Yu must answer not just for his conduct toward Zhang Fei, but for the apparent breach of loyalty to Liu Bei and the brothers’ shared commitment to the Han dynasty.

The misunderstanding is resolved through a sequence of distinct forms of evidence: the testimony of Liu Bei’s wives, Guan Yu’s willingness to act under Zhang Fei’s condition, and an interrogation that establishes the circumstances of Cai Yang’s arrival. Once suspicion gives way to verified knowledge, the brothers can resume their common work. The narrative therefore presents their bond as resilient but not automatic: it survives separation because action, testimony, and shared obligations make its meaning legible again.