Canon 4: Reversed Gains and Harms
When an event occurs and someone benefits from it, that person is the instigator; when someone is harmed, one must investigate from the opposite direction. Thus, the method of a wise ruler is this: when the state suffers harm, examine who profits; when a minister suffers harm, investigate those whose interests are opposed. This principle is illustrated by Chen Xu becoming chancellor when Chu’s army arrived, and the granary official being exposed when millet seed prices soared. Hence, Zhao Xixu arrested the thatch merchant, and Marquis Xi rebuked the deputy cook; Duke Wen discovered the hair in the roasted meat, and Marquis Rang proposed the establishment of emperors.
Note
This excerpt is from “Canon Four: Counter‑Evidence” in Han Feizi · Inner Congeries Part II‑Six Subtleties. It marks the shift from diagnosing problems to offering solutions. It proposes sophisticated reverse reasoning: distrust superficial appearances and trace back hidden schemers by identifying who stands to benefit.
Chen Xu of Wei:
Chen Xu (陈需), a minister of Wei who maintained close ties with the King of Chu. He secretly encouraged Chu to attack Wei, then volunteered to serve as Wei’s envoy to negotiate peace. By “resolving” the crisis he himself had engineered, he leveraged the situation to become Wei’s chancellor. This is a textbook example of “when the state suffers, ask who benefits”. The beneficiary was Chen Xu, so Chen Xu was the instigator.
The Millet Seed Case:
During the reign of Marquis Zhao of Han (韩昭侯), the price of millet seed suddenly spiked. The marquis ordered a thorough inspection of the state granaries and discovered that granary officials had been stealing and selling millet seed on the black market. The abnormal price increase was the clue; the beneficiaries were the sellers; therefore the sellers were the thieves. This illustrates how economic anomalies can serve as forensic evidence.
Zhao Xixu and the Thatch Merchant:
Zhao Xixu (昭奚恤) was a powerful minister of Chu. When someone set fire to a state granary and fodder store, the culprit was unknown. Zhao Xixu ordered his officials to arrest merchants who sold thatch grass. Under interrogation, one confessed to the arson. The logic: thatch grass was a substitute for grain and fodder; when the state’s stores burned, demand for thatch grass would surge. The greatest beneficiary of the fire was the thatch merchant – therefore the thatch merchant was the arsonist.
Marquis Xi and the Deputy Cook:
During the reign of Marquis Zhao of Han (韩昭侯, 昭僖侯, 昭侯, 釐侯), a bowl of meat broth was served with undercooked liver in it. The marquis summoned the deputy cook and demanded an explanation. The deputy cook confessed: “I wanted to drive out the head cook so I could take his place.” The logic: the head cook was harmed by the incident; who benefited from his downfall? His deputy. Therefore the deputy was the saboteur.
Duke Wen of Jin and the Hair in the Roast:
Duke Wen of Jin was served roasted meat with a hair wrapped around it. He ordered the cook executed. The cook pleaded: “I have three capital crimes. My knife is sharp enough to cut through bone, yet it could not cut through the hair – first crime. The charcoal fire was blazing hot, the meat was cooked through, yet the hair did not burn – second crime. I examined the meat carefully before serving, yet I did not see the hair – third crime. Could it be that someone among your attendants secretly hates me?” Duke Wen recognized the logic: if the hair survived the fire unburned, it must have been placed on the meat after roasting. Only the server who carried the plate had the opportunity. The server was interrogated and confessed. This is one of the earliest examples of forensic reasoning in Chinese literature – using physical evidence to establish a timeline and eliminate suspects.
Marquis Rang:
Marquis Rang (穰侯 / Wei Ran 魏冉), was the uncle of King Zhao of Qin, who served as chancellor. Around 288 BCE, when Qin and Qi were the two dominant powers, Marquis Rang proposed that Qin assume the title of “Emperor”. Qi refused to accept Qin’s supremacy. Marquis Rang then proposed a compromise: Qin as “Western Emperor” and Qi as “Eastern Emperor.” This plan ultimately failed, as both states soon reverted to calling themselves “kings.” Han Fei uses this case to show that even grand diplomatic initiatives can serve a minister’s personal interest – by controlling the diplomatic agenda, Marquis Rang extended his own political relevance.
Reversed Gains and Harms:
Refers to the principle that every event has a reverse side – every benefit implies a corresponding harm, and every harm implies a corresponding benefit. In Legalist political theory, this is the foundational method for detecting hidden conspiracies: trace the flow of benefits, and you will find the instigator.
Examine the Beneficiary:
This is the core investigative technique: when the state suffers harm, the ruler should not look at the surface cause but at who ultimately benefited. This is essentially the ancient Chinese equivalent of “follow the money.”
The Technique of Matching Names to Realities:
The method is a specific application of the broader Legalist technique of “刑名” (xing-ming), which means comparing what something is called with what it actually is. In this context, the “name” is the surface appearance of an event (e.g., “the cook was careless”), while the “reality” is the hidden causal chain (e.g., “the deputy cook planted the evidence”). The ruler’s job is to strip away the false name and discover the true reality.
经四有反
事起而有所利，其尸主之；有所害，必反察之。是以明主之论也，国害则省其利者，臣害则察其反者。其说在楚兵至而陈需相，黍种贵而廪吏覆。是以昭奚恤执贩茅，而不僖侯谯其次；文公发绕炙，而穰侯请立帝。
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