The Rise of Sima Power
The Romance of the Three KingdomsThis flow follows the Sima family’s gradual appropriation of Wei, from military influence to the founding of Jin.
increasing
Bearing strength in each event
decreasing
The Adviser Emerges

A New Political Force
Strategic Service
Sima Yi becomes a capable Wei commander and adviser whose talent is initially subordinated to Cao Cao’s family.
A Long Horizon
He does not seize power at once. His later rise depends on preserving influence through changing rulers and waiting for opportunities within the court.
The Cao Shuang Coup

A Regent’s Miscalculation
Sima Yi Appears Incapacitated
Cao Shuang’s visit convinces him that the retired Sima Yi is too ill to pose a threat.
A Swift Takeover
While Cao Shuang attends the emperor’s ancestral rites, Sima Yi takes control of the capital and the military. Cao Shuang surrenders and is later executed with his clan.
Power Inherited

A Family Succession
Sons in Command
Sima Yi passes authority to Sima Shi and Sima Zhao. They inherit not a throne but control over the institutions that govern Wei.
Emperors Removed
Sima Shi deposes Cao Fang and installs Cao Mao. Sima Zhao later dominates the court, making the emperor’s formal authority increasingly fragile.
Cao Mao’s Defiance

The Emperor Acts Alone
A Failed Resistance
Cao Mao tries to mobilize loyalists against Sima Zhao, but his closest officials cannot offer a viable force or strategy.
Death in the Street
He leaves the palace with a small escort and is killed by Cheng Ji. Sima Zhao punishes the immediate attackers while remaining the power behind the crime.
Jin Replaces Wei

A Coup Made Dynastic
Sima Zhao’s Inheritance
After Sima Zhao dies, his son Sima Yan inherits the kingship of Jin and the authority that his family has taken from the Cao rulers.
Abdication
Sima Yan forces Cao Huan to abdicate and declares the Jin dynasty. The transition completes the Sima family’s capture of Wei through a staged transfer of the mandate.
During the later reign of Cao Cao
AD 249
From Sima Yi’s death to Sima Zhao’s regency
AD 260
AD 265