Cao Rui (Emperor Ming of Wei): The Stabilizer of Wei and the Game of Power in "Romance of the Three Kingdoms"

Brief Introduction

Cao Rui (204–239 AD), courtesy name Yuanzhong, was from Qiao County, Pei State (modern Bozhou, Anhui). He was the grandson of Cao Cao and the son of Cao Pi, the Emperor Wen of Wei. He succeeded to the throne in 226 AD, becoming the third emperor of the Cao Wei regime, historically known as Emperor Ming of Wei. During Cao Rui's reign, Cao Wei faced dual pressures from the Northern Expeditions of Zhuge Liang of Shu Han and raids from Eastern Wu. He was the last powerful monarch of the Cao Wei regime, and his rule marked a critical turning point where great power gradually shifted to the Sima clan.

Core Knowledge Points

1. Political and Military Achievements:
Cao Rui inherited Cao Pi's policies. Militarily, he relied heavily on generals such as Sima Yi and Xiahou Shang, successfully defending against Zhuge Liang's five Northern Expeditions and stabilizing Cao Wei's northern defense line. During his reign, Cao Wei's national strength was relatively at its peak, and its territory remained stable.

2. Historical Controversy:
Historically, Cao Rui is known for large-scale construction projects, such as building the Luoyang Palace and the Taiji Hall. This led to the depletion of manpower and increased the burden on the common people. Additionally, in his later years, he became superstitious about Daoism, pursuing longevity, which worsened his health and affected the consistency of his political decisions.

3. Power Balance:
Cao Rui was naturally suspicious and had long been wary of the powerful minister Sima Yi. He attempted to balance the Sima clan by promoting royal clan forces like Cao Shuang. However, due to health issues, he failed to completely eliminate this hidden danger, laying the groundwork for the later "Incident at Gaoping Tombs".

Connection with "Romance of the Three Kingdoms"

In "Romance of the Three Kingdoms", Cao Rui's image is mainly concentrated in the latter part of the novel (approximately Chapters 90 to 104), serving as an important link connecting Zhuge Liang's Northern Expeditions with the Sima clan's seizure of power.

* Succession and Entrustment:
In the novel, before Cao Pi's death, supported by figures such as Sima Yi and Chen Qun, Cao Rui smoothly ascended to the throne. This plot showcases Cao Rui's early political acumen and established Sima Yi's status as a key regent.

* Confrontation with Zhuge Liang:
The book describes in detail scenes of Cao Rui handling military affairs in the court. Facing Zhuge Liang's Northern Expeditions, Cao Rui was initially hesitant but later adopted Sima Yi's advice, appointing him as Commander-in-Chief. Cao Rui both relied on and distrusted Sima Yi; he once dreamed of a "tiger" (symbolizing Sima Yi) and felt uneasy, reflecting the subtle tension between monarch and minister.

* Deathbed Arrangement:
In Chapter 104 of "Romance of the Three Kingdoms", Cao Rui was gravely ill. Before his death, he arranged for Cao Shuang and Sima Yi to jointly assist the young master Cao Fang. This arrangement of "two tigers competing for food" was intended to balance each other, but it directly led to the loss of Cao Wei's great power, marking the formal beginning of the regime's decline from prosperity.

Summary

Cao Rui was a monarch who was good at maintaining stability but lacked innovation. Historically, he maintained the stability of Cao Wei; in "Romance of the Three Kingdoms", he was the main opponent to Zhuge Liang's Northern Expeditions and a key witness to the rise of the Sima clan. Understanding Cao Rui helps to grasp the core logic of the changes in the internal power structure of the Cao Wei regime in the late Three Kingdoms period.