Cao Biao

Historical Record

Cao Biao, courtesy name Zhuhu, was a member of the Cao Wei clan. In the twenty-first year of Jian'an, he was enfeoffed as Marquis of Shouchun^[1]. In the second year of Huangchu, Cao Biao's rank was raised, and he was changed to Duke of Ruyang. In the third year of Huangchu, he was enfeoffed as Prince of Yiyang, and in the same year changed to Prince of Wu. In the fifth year of Huangchu, he was again changed to Shouchun County. In the seventh year of Huangchu, Cao Biao was again transferred and enfeoffed at Baima^[1].

In the winter of the fifth year of Taihe, Cao Biao once came to court in the capital. The next year, the sixth year of Taihe, he was changed to Prince of Chu^[1]. However, during his visit to court, Cao Biao once transgressed a prohibition, and in the first year of Qinglong the responsible officials memorialized against him; an edict ordered that three counties of his fief be reduced and his stipend cut by one thousand five hundred households. In the second year of Qinglong, Cao Wei granted a general amnesty, and Cao Biao's reduced counties and fief were restored. In the third year of Jingchu, his fief was increased by another five hundred households, for a total of three thousand households^[1].

In the first year of Jiaping, Cao Biao became embroiled in a major political upheaval. At that time, the Inspector of Yanzhou, Linghu Yu, and the Grand Commandant, Wang Ling, secretly plotted to enthrone Cao Biao as emperor and move the capital to Xuchang^[1]. After this plot was exposed, the court dispatched an envoy and an Attendant Censor to the fief of Cao Biao to investigate, arresting and interrogating all those implicated. The Commandant of Justice requested that Cao Biao be summoned to the capital to be punished. However, in consideration of Cao Biao's status as a kinsman, the court did not directly escort him to the office of the Commandant of Justice. Instead, following the old precedent of the Han dynasty's Prince of Yan, Liu Dan, it sent the Grand Herald acting as Commandant of Justice, bearing the staff of authority, to the state of Chu, to bestow on Cao Biao an edict under seal, sternly rebuking his crime and hinting that he should take his own life^[1].

The sealed edict clearly pointed out that Cao Biao, as a nearest kinsman of the state, had failed to keep to the duties of a vassal prince and instead colluded with Wang Ling and Linghu Yu, plotting treason and intending to endanger the altars of state. The edict emphasized the principle of the former kings' clear rewards and punishments, citing the examples of the Duke of Zhou weeping as he decided the crime of his two brothers and Emperor Wu of Han grieving as he settled the case of Zhaoping, to show that even crimes by kinsmen could not be exempted. In the end, the edict hinted that Cao Biao should follow the example of the Prince of Yan Liu Dan and end his own life^[1].

After receiving the sealed edict, Cao Biao chose to commit suicide. His consort and all his sons were reduced to commoners and relocated to Pingyuan. Cao Biao's official subordinates and the State-Supervising Internuncio, for failing to report what they knew and failing to fulfill their duty of guidance, were all executed. The state of Chu was abolished and made into the commandery of Huainan^[1].

In the first year of Jiaping (251 CE), in the first month, Sima Yi led an army east to campaign against Wang Ling. In the fifth month, on the day jiayin, Wang Ling committed suicide. In the sixth month, Cao Biao was granted death^[2]. According to the *Records of the Three Kingdoms*, Scroll 29, Cao Biao died at the age of fifty-seven, granted death for conspiring with Wang Ling^[3].

In the Novel

*Romance of the Three Kingdoms* contains no detailed independent chapter or episode depicting Cao Biao. The novel focuses mainly on the grand narrative of the military confrontation between the Cao Wei regime and Shu Han and Eastern Wu, and the power struggle within the Cao clan. Cao Biao's important historical event—the conspiracy case with Wang Ling—is also mentioned in *Romance of the Three Kingdoms*, but his personal image and psychology are not deeply portrayed. The novel presents him more as a key pawn in Wang Ling's conspiracy case, rather than a figure with an independent storyline. Therefore, compared with the histories' detailed records of his enfeoffments, transfers, transgression of prohibitions, and final granting of death, the novel's depiction of Cao Biao is comparatively brief, serving mainly to advance the plot of Wang Ling's conspiracy, without additional literary creation or shaping that deviates from history. Cao Biao's end—being granted death for conspiracy—remains consistent with history in the novel, but the specific details of his suicide and the process of the court bestowing the sealed edict are not laid out as fully in the novel as in the histories.

Key Relationships

* Cao Wei (dies_in): Cao Biao, as a member of the Cao Wei clan, had his whole life closely tied to the rise and fall of the Cao Wei regime. He was repeatedly enfeoffed as a prince and enjoyed the treatment of a kinsman, but in the end was also granted death by the Cao Wei regime for becoming embroiled in the conspiracy case with Wang Ling, his fief abolished^[1].
* Lady Sun (kin_of): The histories do not give the specific name of Cao Biao's consort, recording only that his consort and sons were all reduced to commoners after Cao Biao's death and relocated to Pingyuan^[1]. Here "Lady Sun" may be a general reference to or a literary creation regarding Cao Biao's wife or concubine; her specific identity is unrecorded in history.
* Wang Ling (rival_of): Wang Ling was one of the most important figures associated with Cao Biao's life. In the first year of Jiaping, Wang Ling and the Inspector of Yanzhou, Linghu Yu, secretly plotted to enthrone Cao Biao as emperor and move the capital to Xuchang. This conspiracy directly led to Cao Biao's tragic end. Although Wang Ling was the leader of the conspiracy, Cao Biao, as the one to be enthroned, formed a special "co-conspirator" relationship with Wang Ling, and in the end both died because of it^[1].

Iconic Scenes

* Transgressing a Prohibition at Court and Having His Fief Reduced: Cao Biao came to court in the capital in the fifth year of Taihe (231 CE) but, for transgressing a prohibition, had three counties of his fief and one thousand five hundred households of stipend reduced in the first year of Qinglong (233 CE). This event was a setback in his political career and also reflected the situation of Cao Wei kinsmen under the constraints of power^[1].
* Central Figure in Wang Ling's Conspiracy Case: In the first year of Jiaping (249 CE), Cao Biao was chosen by the Inspector of Yanzhou, Linghu Yu, and the Grand Commandant, Wang Ling, as the object of their enthronement, with the intent to depose the emperor and set him up as ruler. This event pushed Cao Biao to the very center of the political vortex, making him a key pawn in the late Cao Wei power struggle^[1].
* Granted a Sealed Edict to Take His Own Life: After Wang Ling's conspiracy case was exposed, the Cao Wei court did not directly arrest and punish Cao Biao but dispatched the Grand Herald bearing the staff of authority to his fief to bestow a sealed edict, sternly rebuking his crime and hinting that he should take his own life. Cao Biao ultimately chose suicide, ending his life. This scene embodies both the special manner in which Cao Wei dealt with clan members and Cao Biao's helpless choice in a desperate situation^[1]. His death, together with his consort and sons being reduced to commoners and his fief abolished, marked the complete end of his political life^[1].