Quick Answer: Who Was Sima Zhao?
Sima Zhao (司马昭, Sīmǎ Zhāo, 211–265) was the dominant statesman of late Cao Wei (曹魏, Cáo Wèi). He succeeded his brother Sima Shi (司马师, Sīmǎ Shī) in 255 and held the title King of Jin late in his life.[1][3]
- Court crisis: Emperor Cao Mao (曹髦, Cáo Máo) died in a confrontation with Sima Zhao’s faction in 260.
- Military expansion: Wei conquered Shu Han (蜀汉, Shǔ Hàn) in 263.
- Dynastic change: His son Sima Yan (司马炎, Sīmǎ Yán) replaced Wei with Western Jin after his death.
The king’s title and the later imperial dynasty mark two stages in the transfer of power.
A history may call Sima Zhao an emperor even though he died while Wei still stood. That difference between a later honor and a lifetime position opens a clearer way to read his career, including the violence at court and the conquest that followed.
From Sima Shi’s Successor to King of Jin
Sima Zhao was a son of Sima Yi (司马懿, Sīmǎ Yì). His family had gained the upper hand at the Wei court after the coup of 249. When Sima Shi died in 255, Sima Zhao took over the leadership that his brother had exercised. To place the succession within the Three Kingdoms period, follow who occupied the throne and who directed the court as two separate questions.[1][3]
Cao Mao and then Cao Huan (曹奂, Cáo Huàn) belonged to the line of Wei emperors. Sima Zhao’s military and political authority gave him influence over what their government did. The court granted the title King of Jin in 264, after the conquest of Shu. It recognized a royal position within the order over which a Wei emperor still formally presided. Sima Yan’s later accession brought a different status, that of a reigning Jin emperor.[1][2][3]
The Book of Jin calls Sima Zhao Emperor Wen in its annals. That heading looks back from the Jin Dynasty and treats him as an imperial ancestor. In an account organized by events of the 260s, King of Jin is the title that identifies his late lifetime position.[1]
What Happened to Cao Mao in 260
In 260, Cao Mao tried to move against Sima Zhao and was killed in a clash with men of his faction. The transmitted Records of the Three Kingdoms provides a short death notice, an official account from the empress dowager and several narratives preserved by the annotator Pei Songzhi. These parts have different authors and purposes.[2]
An account from the Han Jin Chunqiu (汉晋春秋, Hàn Jìn Chūnqiū) has Cao Mao tell his attendants that Sima Zhao’s intentions were obvious to everyone. It then describes Jia Chong confronting the emperor’s party and Cheng Ji striking the fatal blow. Other accounts in the annotation vary in how they describe the clash and what was said. The dowager’s decree instead presents Cao Mao as a threat to her and to the court.[2]
The result is clear enough to follow the succession. Cao Mao died, and Cao Huan took the throne while Sima Zhao remained in control. The accounts distinguish Cheng Ji, the man said to have struck the blow, from Sima Zhao, the official whose faction controlled the outcome. They leave open how much Sima Zhao knew about the immediate decisions of his subordinates. An official claim of legitimacy and a later narrative of responsibility answer different questions.[1][2]
The Conquest of Shu and Its Political Effect
Wei launched the campaign against Shu Han in 263 under Sima Zhao’s government. Its generals carried out the operation. Zhong Hui advanced into the Hanzhong region, Jiang Wei tried to hold up the Wei armies, and Deng Ai took a separate route that threatened Chengdu. The ruler of Shu, Liu Shan, surrendered.[1][3]
The victory ended Shu Han while both Wei and Wu remained in existence. It expanded the territory ruled from the Wei court and strengthened Sima Zhao’s position before he took the royal title. Western Jin inherited the result of the campaign. Its later conquest of Wu was a distinct event, under Sima Yan.[1][3]
What the Famous Saying Can Tell Us
In later use, the saying about Sima Zhao’s intentions describes a plan so apparent that even people outside the dispute can recognize it. In the story it is an emperor’s accusation against the official who dominates his government. That setting explains why the words carry an implication of power and danger, beyond the everyday idea of an open secret.[2]
For a close reading, locate the brief death notice first. Then identify the work quoted in the annotation and compare it with the other narratives Pei preserves. A careful reference can say that Xi Zuochi’s account, preserved by Pei Songzhi, attributes the words to Cao Mao. That formulation identifies a speaker and a transmitter without assuming there was a contemporaneous transcript. Readers coming from the Romance of the Three Kingdoms can use the same method to keep literary retellings separate from the historical tradition behind them.[2]
FAQs About Sima Zhao
Was Sima Zhao an emperor during his lifetime?
His late lifetime title was King of Jin. The Book of Jin uses a posthumous imperial title. His son Sima Yan was the first reigning emperor of Western Jin.
Was Sima Zhao related to Sima Yi?
Yes. Sima Zhao was a son of Sima Yi and a younger brother of Sima Shi. He succeeded Sima Shi as the leading figure at the Wei court.
Did Sima Zhao personally capture Chengdu?
Sima Zhao directed Wei policy, but the field commanders conducted the campaign. Deng Ai’s advance toward Chengdu led to Liu Shan’s surrender.
Sumber
[1] Book of Jin, chapter 2. Annals of Emperor Wen
[2] Chen Shou with Pei Songzhi’s annotations, Records of the Three Kingdoms, chapter 4. Annals of the three young emperors
[3] Rafe de Crespigny, The Cambridge History of China. The Three Kingdoms and Western Jin: chapter preview