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Biography & Historical Record
Cai He is a fictional military commander who appears in Luo Guanzhong’s classic 14th-century historical novel Romance of the Three Kingdoms. In strict historical reality, Cai He does not appear in Chen Shou’s official dynastic history Records of the Three Kingdoms (Sanguozhi) or any authentic Eastern Han historical archives. While his elder brother Cai Mao was a prominent official in Jing Province who surrendered to Cao Cao, the characters Cai He and Cai Zhong were created by the novelist as tragic, incompetent foils to showcase the superior strategic brilliance of Zhou Yu and Zhuge Liang during the events preceding the Battle of Red Cliffs.
Role in Romance of the Three Kingdoms
In Chapter 45 of Romance of the Three Kingdoms, after Cao Cao is deceived into executing the brilliant naval commander Cai Mao, he realizes his tactical mistake and seeks to regain intelligence on Eastern Wu’s internal affairs. Cao Cao dispatches the brothers Cai He and Cai Zhong—younger relatives of Cai Mao—to Eastern Wu under the guise of defectors. Their mission is to act as spies, reporting back on the morale and strategic movements of Zhou Yu’s fleet. However, Zhou Yu, upon seeing the brothers, immediately deduces their true purpose. Instead of executing them, Zhou Yu decides to use them as conduits for disinformation to deceive Cao Cao, successfully manipulating the brothers into reporting false intelligence about the morale of his officers and Huang Gai’s supposed betrayal.
In Chapter 49, as the strategic trap closes around Cao Cao’s armada, Zhou Yu prepares for the final decisive fire attack. He summons Cai He to his command tent, explicitly exposing the ruse by informing the spy that his false reports have successfully led Cao Cao into a catastrophic strategic position. Before the entire Wu officer corps, Zhou Yu orders Cai He dragged to the riverbank. Despite desperate pleas for mercy and pathetic attempts to excuse his treason, Cai He is beheaded by Zhou Yu’s executioners. His blood is used as a ritual offering to consecrate the grand command banner of the Eastern Wu naval fleet, while his brother Cai Zhong is similarly lured into a trap and slain by Gan Ning in a coordinated purge of the enemy spies.
Famous Quotes & Historical Sayings
In Chapter 49 of Romance of the Three Kingdoms, upon being confronted by Zhou Yu’s executioners, Cai He cried out in futile terror: ‘I am but a servant following orders! Have mercy, I beg you, do not kill me! I will reveal all of Cao Cao’s secrets if you only spare my life!’
Cai He (蔡和) — Historical & Literary Timeline
Sent by Cao Cao to Spy on Eastern Wu
Dispatched by Cao Cao to Eastern Wu under the guise of defecting to spy on Zhou Yu’s naval preparations; immediately identified as a spy by Zhou Yu and used to transmit false intelligence to Cao Cao.
Beheaded as Sacrificial Offering for the Fire Attack
Exposed by Zhou Yu; dragged to the riverbank and beheaded as a ritual sacrifice to consecrate the Eastern Wu naval command flag prior to the fire attack at Red Cliffs.
For detailed historical records, archives, and official chronicles, explore Cai He on Wikipedia.
Key Relationships
Family
- Cai Mao (蔡瑁, Thái Mạo) — Elder relative and prominent Jing Province naval commander whose execution by Cao Cao prompted the deployment of Cai He and Cai Zhong on their espionage mission.
- Cai Zhong (蔡中, Thái Trung) — Brother and fellow conspirator who accompanied Cai He as a feigned defector to Eastern Wu in 208 AD, serving as a conduit for false intelligence before being executed by Gan Ning.
Friends
- No information
Enemies
- Zhou Yu (周瑜, Chu Du) — Grand Commander of Eastern Wu who instantly deduced Cai He’s false defection in 208 AD, fed him deceptive intelligence to mislead Cao Cao, and ultimately had him beheaded in a sacrificial ritual to consecrate the Wu war banner.
- Huang Gai (黄盖, Hoàng Cái) — Eastern Wu veteran general whose staged punishment and feigned defection plot was successfully transmitted to Cao Cao through Cai He’s unknowingly manipulated intelligence reports.
- Zhuge Liang (诸葛亮, Gia Cát Lượng) — Shu Han strategist and allied advisor who saw through Cai He’s espionage scheme alongside Zhou Yu during the preparations for the Battle of Red Cliffs.
Other
- Cao Cao (曹操, Tào Tháo) — Warlord and ruler who dispatched Cai He to infiltrate Eastern Wu’s naval camp under the pretense of surrender in 208 AD, only to be deceived by the manipulated reports his spy unknowingly returned.
In Novel
Chapter 34
- Cai He (蔡和, Sái Hòa): Cai He is identified as a kinsman of Cai Mao and serves in Cao Cao’s naval forces after Jingzhou submits. Zhou Yu uses Cai He and Cai Zhong in a deliberate intelligence deception. They are made to appear as potential defectors, allowing Jiang Gan to discover a forged letter and carry false information back to Cao Cao. Cai He is ultimately executed by Zhou Yu as part of the deception before the Battle of Red Cliffs. The character list identifies Cai He as a Cai Mao kinsman who is killed by Zhou Yu. citeturn1search1
In History
Identification
- Cai He (蔡和, Sái Hòa) is primarily a character of the Romance of the Three Kingdoms tradition.
Literary Role
- He is presented as a member of the Cai family of Jing Province and is associated with the political faction surrounding Liu Cong’s surrender to Cao Cao.
- The novel gives him a narrative role in the events surrounding the transfer of Jing Province and later conflicts.
Historical Caution
- The historical sources do not support the same detailed character biography attributed to him in the novel.
- Classification: Novel-associated.


