The Lost Bladesman

Cao Cao lets Guan Yu leave because he genuinely respects Guan Yu's unwavering loyalty to Liu Bei. Rather than force Guan Yu to stay against his will or kill him, Cao Cao issues a strict order that no one should stand in Guan Yu's way. He believes that killing Guan Yu would be dishonorable and would only create a permanent enemy in Liu Bei. Cao Cao's strategy is to demonstrate his magnanimity and hope that Guan Yu might one day repay the debt, though he also knows that true loyalty cannot be bought.

Earlier, Cao Cao's gifts and favors are refused by Guan Yu, showing that coercion will not work.

Emperor Xian, not Cao Cao, is the one who issues the order to kill Guan Yu. This revelation comes as a shock because it reorients the moral landscape of the film. Cao Cao, despite being the villain in many Three Kingdoms narratives, is not behind this assassination attempt. The Emperor views Guan Yu as a threat and sends his own assassins, creating a tragic twist where the imperial authority itself seeks to destroy a loyal subject.

The political tension between the Emperor and various warlords sets up this betrayal.

Cao Cao tests Guan Yu with Qi Lan because he wants to break Guan Yu's loyalty to Liu Bei. Knowing that Guan Yu has hidden feelings for Qi Lan, Cao Cao orchestrates a situation where Guan Yu must choose between his personal happiness with Qi Lan and his sworn oath to Liu Bei. The test is designed to force a confession that would sever Guan Yu's ties to Liu Bei, potentially making him join Cao Cao's side permanently.

Qi Lan remains with Guan Yu at Cao Cao's base as a 'constant reminder of a possible personal future.'

Qi Lan is killed in the crossfire during Emperor Xian's assassination attempt on Guan Yu. She pretends to seek Liu Bei's consent for marriage with Guan Yu, but her true aim is to derail his aid to Cao Cao. When she stabs Guan Yu in the back, the Emperor's assassins burst into the scene and Qi Lan is killed in the chaos. Her betrayal leads to her death, and Guan Yu loses both his love and his trust in her.

Qi Lan's earlier maneuvering to complicate Guan Yu's departure hints at her ultimate betrayal.

Guan Yu refuses Cao Cao's gifts because he remains steadfastly loyal to his sworn brother Liu Bei. Despite Cao Cao showering him with precious gifts and tokens of favor, Guan Yu never wavers from his vow to Liu Bei. He views any acceptance of Cao Cao's generosity as a betrayal of his sworn brotherhood. Even when Cao Cao offers power, wealth, and status, Guan Yu's sense of honor compels him to reject everything and wait for the chance to reunite with Liu Bei.

The film establishes early that Guan Yu and Liu Bei are sworn brothers with an unbreakable oath.

Guan Yu escapes by fighting his way through any opponent who tries to stop him. Cao Cao has issued a strict order that no one should stand in Guan Yu's way, but multiple warriors still attempt to block his path. Guan Yu defeats Kong Xiu, Han Fu, Meng Tan, Bian Xi, Wang Zhi, and Qin Qi in rapid succession, cutting a bloody path through the passes. Each victory demonstrates his unmatched combat skills and reinforces his commitment to reaching Liu Bei.

The film builds tension as Guan Yu prepares for departure, knowing the road will be dangerous.

The funeral bookends the story to create a frame narrative that establishes Guan Yu's tragic fate from the start. By showing his severed head being buried in the opening, viewers understand that Guan Yu will not survive his journey. The return to the funeral at the end provides closure and allows Cao Cao to reflect on their complex relationship, acknowledging responsibility for Guan Yu's death while also blaming Sun Quan, Liu Bei, and Zhuge Liang. This structure emphasizes that loyalty and honor come at a terrible cost.

The post-credits scene shows Guan Yu as a legendary figure, suggesting his legacy transcends death.

Qi Lan betrays Guan Yu because she seeks to undermine his loyalty to Cao Cao and prevent him from reuniting with Liu Bei. She pretends affection and speaks of seeking Liu Bei's consent for their marriage, but her true motive is to derail Guan Yu's aid to Cao Cao. By stabbing him, she hopes to stop Guan Yu from helping Cao Cao's enemies, though her plan backfires when Emperor Xian's assassins arrive and she is killed in the crossfire. Her betrayal stems from conflicting loyalties and personal ambition.

Earlier, Cao Cao uses Qi Lan as leverage in his test of Guan Yu's loyalty.

Guan Yu is pursued because Emperor Xian views him as a threat to the imperial court. Even though Guan Yu has served Cao Cao, the Emperor sees his potential to reunite with Liu Bei and become a powerful ally against the throne. The Emperor secretly orders Guan Yu's death, not because Guan Yu has done anything wrong, but because his legendary loyalty and martial prowess make him dangerous. This political persecution forces Guan Yu into even more battles as he tries to reach Liu Bei.

The revelation about the Emperor's order comes at a pivotal moment before Guan Yu can reunite with Liu Bei.

Guan Yu's Green Dragon Crescent Blade represents his legendary status as a warrior and his unwavering commitment to honor. The weapon is his signature from historical legend, and in the film, it symbolizes that his loyalty is as sharp and unbreakable as his blade. In the post-credits scene, Guan Yu stands with his blade at his side, stroking his beard, reminding viewers that his legend endures beyond the events of the film. The blade is both a weapon of war and a symbol of his indomitable spirit.

Throughout the film, Guan Yu's blade is described as 'a blade as sharp as any weapon' representing his loyalty.

Guan Yu turns away from Cao Cao after Qi Lan's death because he refuses to compromise his bond with Liu Bei and the cause they share. With Qi Lan gone and the weight of her betrayal fresh, Guan Yu makes a decisive choice to pursue the fight against their rivals alongside Liu Bei. He recognizes that his path lies with his sworn brother, not with Cao Cao, regardless of the personal cost. This decision shapes the next two decades of his life as he dedicates himself to reuniting with Liu Bei.

The test with Qi Lan already showed Guan Yu choosing loyalty to Liu Bei over personal happiness.