Xu Yi

Biography & Historical Record

Xu Yi was an officer who served the state of Cao Wei during the late Three Kingdoms period. He was the son of the legendary tiger general Xu Chu, inheriting his father’s noble title as Marquis of Mouxiang and physical presence, though lacking his father’s strategic discretion and military precision.

In 263 AD, during the massive campaign launched by Regent Sima Zhao to conquer Shu Han, Xu Yi served as a vanguard officer under the Grand General Who Guards the West, Zhong Hui. Assigned to spearhead the advance division through the rugged, mountainous routes of the western frontier, Xu Yi was tasked with constructing bridges, repairing treacherous roads, and clearing obstacles for the main army’s heavy cavalry and supply wagons.

As Zhong Hui led the main force across a vital wooden bridge, the structure suddenly caved under the weight, causing Zhong Hui’s horse to stumble into the mud. Infuriated by this failure of engineering and the direct threat to his life and army’s momentum, Zhong Hui ordered Xu Yi to be arrested immediately. Despite officers pleading for mercy on account of the heroic exploits and legendary legacy of his father Xu Chu, Zhong Hui remained ruthless and executed Xu Yi on the spot to instill absolute fear and discipline throughout the entire expeditionary force.

Historically, after Zhong Hui’s death and the end of the campaign, Xu Yi’s son Xu Yu inherited the family’s noble title and continued the lineage in Cao Wei.

Role in Romance of the Three Kingdoms

In Luo Guanzhong’s Romance of the Three Kingdoms, Xu Yi’s execution is dramatically depicted in Chapter 116. Appointed as vanguard commander under Zhong Hui for the invasion of Shu Han, Xu Yi is ordered to build roads and bridges ahead of the main divisions. Near Nanzheng, Zhong Hui leads his personal escort across a newly constructed bridge, but a plank gives way, trapping Zhong Hui’s horse in the mud and exposing him to potential enemy archers. Enraged, Zhong Hui orders Xu Yi executed for military negligence. Although generals plead that Xu Yi is the son of the immortal Tiger General Xu Chu, Zhong Hui coldly responds: ‘If military discipline is not strictly enforced, how can we command hundreds of thousands?’ Xu Yi is beheaded outside the main tent, causing the entire army to tremble with awe and follow orders with flawless precision.

Xu Yi (許儀) — Literary Timeline

Key Relationships

Family

• Xu Chu (许褚, Hứa Chử) — Father and legendary general of Cao Wei; his reputation as a “Tiger General” was cited by subordinates in an unsuccessful plea for mercy during Xu Yi’s execution.
• Xu Ding (许定, Hứa Định) — Uncle who served as a military commander under Cao Wei.
• Xu Yu (许誉, Hứa Dự) — Son who inherited the family’s noble title of Marquis of Mouxiang following his father’s execution.

Friends

• No information

Enemies

• Zhong Hui (钟会, Chung Hội) — Commander-in-chief of the 263 AD invasion of Shu Han who ordered Xu Yi’s immediate execution after a bridge failure threatened his safety and military discipline.

Other

• Sima Zhao (司马昭, Tư Mã Chiêu) — Regent of Cao Wei who organized the 263 AD campaign against Shu Han, serving as the ultimate authority under whom Xu Yi was deployed.
• Deng Ai (邓艾, Đặng Ngải) — Fellow Wei general who led the parallel prong of the 263 AD conquest of Shu Han alongside the forces Xu Yi served in.
• Jiang Wei (姜维, Khương Duy) — Grand General of Shu Han whose defensive strategy against the Wei invasion defined the context of the campaign in which Xu Yi served and died.

Gallery