Lü Bu and Chen Gong’s lord–adviser relationship

Lü Bu and Chen Gong’s lord–adviser relationship joins a formidable but politically vulnerable warlord to a counsellor whose strategic insight cannot overcome betrayal within Lü Bu’s own ranks. Chen Gong helps Lü Bu assess threats and plan responses, yet his service unfolds amid competing loyalties and increasingly desperate military circumstances. At Xiapi, the relationship ends not in a shared final stand but in separate captures and deaths: Chen Gong refuses to seek his life from Cao Cao, while Lü Bu makes one last appeal to Xuande.

Formation and Strategic Counsel

Chen Gong appears as one of Lü Bu’s trusted advisers during a period when Cao Cao’s actions threaten Lü Bu’s position. While hunting, he notices a messenger returning from Xuande and stops him to discover that the man has carried a message from Cao Cao to Xuande. Chen Gong seizes the letter and takes it to Lü Bu. The message reveals that Xuande has agreed to Cao Cao’s plan to attack Lü Bu, turning a report gathered on the road into an immediate warning of an alliance against their lord.

The pair’s relationship is not limited to receiving news. In a separate defensive crisis, Chen Gong studies Cao Cao’s apparent preparations against the city wall. He identifies the southeastern ramparts as genuinely weak but recognizes that Cao Cao’s visible preparations on the northwest side may be intended to disguise the expected point of attack. Chen Gong advises Lü Bu to answer deception with deception: conceal experienced soldiers near the vulnerable southeastern wall and make the northwest defenses look strong by placing ordinary people in armor there. His counsel shows him reading an enemy’s presentation of its plans rather than simply reacting to it.

When Lü Bu learns that Xuande has agreed to join Cao Cao, he orders forces against Xiaopei, Runan, and Yingchuan, while a further army is sent to join rebels on Mount Tai. Lü Bu leads a supporting force toward Xiaopei. Chen Gong’s discovery has helped turn suspicion into a campaign, but it cannot secure Lü Bu’s position against the military and political pressures gathering around him.

Trust, Defection, and the Fall of Xiapi

Chen Gong’s later dealings with Cao Cao make the lord–adviser bond more precarious. In Xuzhou, he is troubled by Chen Deng, Xuande’s friend serving at Lü Bu’s court, and suspects that Chen Deng is encouraging Lü Bu toward overconfident plans. The narrative presents Chen Gong as alert to the danger inside the court, but it also makes clear that his suspicions do not prevent a deeper betrayal: Chen Deng has already decided that Lü Bu’s cause is doomed and secretly informs Cao Cao of Lü Bu’s intentions.

On Chen Deng’s recommendation, Lü Bu moves his reserves and family to Xiapi as a refuge if Xuzhou should fall. Chen Deng then helps bring about the loss of Xiaopei: he persuades most of Lü Bu’s commanders that urgent orders have summoned them to Lü Bu’s aid, and, after they leave, opens the gates to Cao Ren. Defeated by Cao Cao’s men, Lü Bu retreats toward what he believes is the safety of Xiaopei, only to find it in enemy hands. With Zhang Fei closing in, he escapes to Xiapi. These reversals expose the gap between the counsel Lü Bu receives and the loyalty he can actually rely on: Chen Gong’s insight into Chen Deng’s conduct does not stop Chen Deng’s plot from determining the outcome.

Besieged in Xiapi, Lü Bu wants to attack the enemy but is dissuaded by the distress of his wife and concubine. He becomes depressed and drinks heavily. Xu Si and Wang Kai renew the proposal of an alliance with Yuan Shu through the marriage of Lü Bu’s daughter to Yuan Shu’s son, and they travel through the enemy lines to seek Yuan Shu’s agreement. But Zhang Fei captures one of Lü Bu’s envoys on the return journey, exposing the plan to Cao Cao, who tightens the siege to prevent Lü Bu and his daughter from escaping.

Lü Bu eventually attempts a night breakout with his daughter riding behind him on Red Hare. She is wrapped in protective cotton and armor, but when the flight is discovered near Xuande’s camp, the three sworn brothers attack the escort. Lü Bu turns back rather than risk his daughter’s life. The failed escape deepens his despair. These developments frame the fall of Xiapi as the culmination of divided loyalties, failed plans, and a lord increasingly unable to act decisively—not as the result of one isolated military defeat.

The Siege and the End of Their Service

Cao Cao’s advisers Xun You and Guo Jia propose diverting the Yi and Si rivers to flood Xiapi. Inside the besieged city, resentment toward Lü Bu grows. He shifts from drunkenness to abstinence and forbids alcohol; when one of his generals breaks the ban to celebrate a small success, Lü Bu orders the man’s death before reducing the punishment to fifty lashes. The episode alienates other commanders, and plots gather. Red Hare is stolen and delivered to Cao Cao.

During a major assault, Lü Bu falls asleep in a tower. Song Xian takes his halberd, and Wei Xu binds him; Lü Bu wakes to find that his own men have made him their prisoner. Wei Xu signals to Cao Cao and opens the gates, allowing Cao Cao’s forces to take Xiapi. Chen Gong is captured as well. The two men’s shared political cause has thus ended through the actions of men within Lü Bu’s own command: the city falls, Lü Bu is seized by subordinates, and Chen Gong is brought before the victors.

Cao Cao and Xuande sit in judgment over the prisoners. When Cao Cao asks Chen Gong how he has been since their last meeting, Chen Gong answers that he abandoned Cao Cao because Cao Cao was deceitful. Cao Cao points out that Chen Gong went on to serve Lü Bu; Chen Gong replies that Lü Bu, though foolish, was not deceitful in the same way. The exchange distinguishes the grounds of Chen Gong’s allegiance from mere calculation: he condemns Cao Cao’s character even while acknowledging Lü Bu’s lack of wisdom.

Judgment, Death, and the Relationship’s Meaning

Chen Gong expects to die and refuses to bargain for his life. Asked what should happen to his wife, mother, and children, he asks Cao Cao to spare them, invoking filial rule and benevolence toward a condemned man’s family. Cao Cao orders that Chen Gong’s family be taken to the capital and cared for throughout their lives. Chen Gong is then executed. His final exchange with Cao Cao makes the end of his service to Lü Bu inseparable from a moral contrast: the adviser who had worked for a compromised lord holds to his own judgment of Cao Cao and entrusts his family to an enemy’s stated protection.

Lü Bu is brought before Cao Cao afterward and sentenced to death by strangulation. He appeals to Xuande by recalling that he once saved Xuande’s life with a single arrow. Zhang Liao, one of Lü Bu’s men, urges him to meet death as a hero rather than plead for his life; the sentence is carried out. The contrast with Chen Gong is sharp. Chen Gong accepts death while asking that his family be protected, whereas Lü Bu appeals to a former opponent by recalling a past service. Neither the appeal nor the adviser’s courage alters the outcome.

As a relationship, their service is marked by genuine military counsel but also by the limits of counsel in a court where trust is repeatedly undermined. Chen Gong can recognize a deceptive military feint and worry over Chen Deng’s influence, yet cannot prevent the betrayal that delivers Xuzhou and Xiaopei to Cao Cao. Lü Bu’s defeat then comes through siege, internal disaffection, and capture by his own officers. Their separate fates give the relationship its final shape: Chen Gong’s loyalty is tested in judgment, while Lü Bu’s rule collapses before judgment can rescue it.