2026年05月16日
The year 1397 was Zhu Yuanzhang's (the Hongwu Emperor) most anxious year.
It was a year marked by a white rainbow piercing the sun and six vassal kings drilling their troops. Yet, his own son-in-law, Ouyang Lun, drove a convoy of fifty carts of smuggled tea straight into the blade of the imperial ban. This article focuses on the "Great Ming's First Tea Case," analyzing the military gambit behind Zhu Yuanzhang's obsessively repetitive imperial edict, and exploring how tea was "weaponized" into a lethal noose to control foreign tribes. This is a profound dialogue between a simple leaf and the fate of an empire, as well as the ultimate dissection of the Ming Dynasty's political-economic logic of "strict tea, lenient liquor."
On the eighth day of the third month in the thirtieth year of Hongwu (1397), Zhu Yuanzhang issued a "plain-text edict" devoid of scholarly ghostwriting or ornate prose. Between the lines emerged the sheer terror of an iron-blooded emperor facing the loss of border control:
From Imperial Edicts of the Ming Dynasty and other archives regarding the Hongwu 30 edict: > "The interception of smuggled tea in Shaanxi and Sichuan is critical. You, the Ministry of Revenue, shall dispatch runners to Shaanxi, Henan, Taozhou, Sichuan, Diaomen, Liya, and other regions, instructing the chieftains at the passes to strictly intercept it and permit no smuggled tea to leave the borders. Now that they have been told this time, dispatch someone to tell them once every month hereafter, all the way until September. You must make sure they are thoroughly instructed. Ensure every pass is secured without leaks. Having told them this, if anyone dares to let smuggled tea exit, capture and punish them. Respect this."
Looking across Chinese history, there is perhaps no other crop that could make the supreme ruler of a massive empire operate with such exasperated frenzy. Like an obsessive-compulsive patient, Zhu Yuanzhang ordered the central Ministry of Revenue to send special envoys "every month" to key border defenses like Shaanxi and Sichuan, to constantly nag and repeatedly threaten the garrison commanders.
From March in the spring all the way to September in the autumn, he scolded them for over half a year, even issuing the death threat: "if anyone dares to let smuggled tea exit, capture and punish them."
Why was the emperor so anxious? Because in the thirtieth year of Hongwu, the Great Ming Empire was inside a pressure cooker ready to explode at any moment.
Zhu Yuanzhang's anxiety was not unfounded. Opening the chronicles of that year, the thirtieth year of Hongwu was a terrifying year plagued by natural disasters, looming foreign threats, and frantic internal purges.
From Ming Dynasty Chronicles regarding Hongwu 30: > "Spring, first month of the Dingchou year: Ordered the marquises to prepare defenses against the barbarians in Guanzhong. Second month: A white rainbow spanned the sky. Summer, fourth month: Ordered military and civilians with any talent to present themselves for service. Fifth month, Renzi new moon: Solar eclipse. Ordered the six Kings of Jin, Yan, Dai, Liao, Ning, and Gu to drill troops against the barbarians. Re-examined the Ministry of Rites' metropolitan graduates; the re-examining officials were all executed as remnants of the Lan Yu and Hu Weiyong factions. [...] Ordered officials worldwide to confess their corruption. Imperial Son-in-Law Commandant Ouyang Lun was ordered to commit suicide. Autumn, eighth month: The Yellow River breached at Kaifeng. Winter, tenth month: Mars encroached on the Southern Dipper."
In this brief historical record, we see three layers of suffocating pressure:
The intimidation of celestial omens: "A white rainbow spanning the sky," "solar eclipse," "Mars encroaching on the Southern Dipper," "the Yellow River breaching at Kaifeng." In the political logic of the ancients, these anomalies were severe warnings from heaven regarding the monarch's dereliction of duty. Zhu Yuanzhang, with his grassroots origins and deep superstitions, desperately needed to find objects of rectification in the human realm to answer to heaven.
The approach of foreign threats: In the first month, he "ordered the marquises to prepare defenses against the barbarians in Guanzhong," and in the fifth month, "ordered the six kings to drill troops." The remnants of the Mongol forces in the north were restless, and the Great Ming army was in a state of high combat readiness.
The internal massacre: The fifth month saw the outbreak of the famous "North-South Examination Case." Suspecting the examiners of fraud, Zhu Yuanzhang executed all the re-examining officials, branding them with the treasonous charge of being "remnants of the Lan Yu and Hu Weiyong factions." Simultaneously, he strictly ordered officials nationwide to "confess their corruption."
At this critical moment—with the entire nation militarized, under intense political pressure, and imperial power desperately needing to assert its authority—any behavior challenging the state's bottom line was akin to playing with fire. And tea was precisely the sole strategic resource the Great Ming Empire used to trade for warhorses (tea-horse trade) with western nomadic tribes to defend against the powerful northern enemy.
Yet, it was exactly at this time that Imperial Son-in-Law Commandant Ouyang Lun, with his smuggling convoy, swaggered right into the emperor's line of fire.
Just four months after Zhu Yuanzhang began sending men to the borders "every month" to roar his orders, the smuggling case erupted. This was no ordinary contraband concealment; it was a brazen "hijacking" of the state's military logistics system.
From Comprehensive Records of the Imperial Ming (Huang Ming Zizhi Tongji): > "Imperial Son-in-Law Commandant Ouyang Lun committed a crime and was granted death. Previously, Tea-Horse Agencies were established in Shaanxi, Sichuan, and other areas, ordering the western barbarians to deliver horses in exchange for tea. Those who smuggled tea out of the borders were to be beheaded at the passes, and officials who failed to detect this faced capital punishment. At that time, Son-in-Law Lun was ordered on a western diplomatic mission. He smuggled Ba tea out of the borders to trade for high profits, relying on his power to act tyrannically. The localities could not bear his harassment, yet the border ministers all complied and dared not disobey. Lun ordered the Shaanxi Provincial Administration Commission to dispatch official documents to its subordinates, commandeering carts to transport tea across Hezhou. Lun's servant, Zhou Bao, extorted up to fifty carts. An official surnamed Shi from the Lan County River Bridge Police Office was beaten unbearably and reported the matter. The Emperor was furious. For failing to report it, the Provincial Administration officials were executed alongside Lun, who was granted death. Bao and the others were all executed."
This historical text exposes a jaw-dropping truth. Ouyang Lun was not on a private incognito tour; he was an imperial envoy "ordered on a western mission." Instead of inspecting the border defenses for the emperor, he leveraged the power of his royal connection to aggressively hoard Ba tea for highly profitable smuggling.
His servant, Zhou Bao, directly extorted "fifty carts" from lower-level government offices! In ancient times of material scarcity, fifty large carts constituted a logistical fleet capable of supporting a small-scale military campaign; yet here they were, openly rolling down the empire's official roads, transporting smuggled tea that sabotaged national defense.
Even more terrifying and despair-inducing for Zhu Yuanzhang was the "systemic blindness" of the entire Ming bureaucratic apparatus. The Shaanxi Provincial Administration Commission (the highest provincial administrative body) not only "failed to detect" this fifty-cart smuggling convoy but even "complied and dared not disobey," actively issuing official documents to assist in dispatching the vehicles.
Zhu Yuanzhang's painstakingly built Iron Curtain of border defense instantly became a piece of scrap paper in the face of privilege. The emperor's anxiety over the outflow of tea transformed completely in this moment into a furious rage against the "usurpation of authority and the loss of imperial control."
When the highest-ranking officials were all pretending to be blind, who popped this balloon of privilege? It was the lowest-ranking grassroots clerk.
From Hidden Archives of the Famous Mountain (Mingshan Zang): > "In this year, Imperial Son-in-Law Commandant Ouyang Lun was sentenced to death for smuggling tea. Ouyang Lun had sent his servants back and forth to Shaanxi to smuggle tea to the barbarians. They all relied on his power to act arrogantly. Lun's servant Bao was particularly tyrannical. Upon reaching the Lan County River Bridge, he beat the police office clerk. The clerk could not endure it and reported the matter. Taizu [Zhu Yuanzhang] granted Lun death. Because the Provincial Administration officials did not speak up, they, along with Bao and others, were all executed. Envoys were dispatched bearing three imperial seal edicts to reward the informant."
When this massive smuggling convoy arrived at the Lan County River Bridge, the local police clerk surnamed Shi attempted to execute the "strict interception" demanded by Zhu Yuanzhang's edict. However, the servant Zhou Bao, showing zero regard for the laws of the Great Ming, directly inflicted violence upon this official at the pass ("beat the police office clerk").
These fists shattered the dignity of the grassroots official and also woke up Zhu Yuanzhang. Unable to bear the humiliation, Shi risked his life to bypass the chain of command and report the incident.
Zhu Yuanzhang's handling of the situation was extremely cold-blooded and decisive. He did not need the tedious procedures of a judicial trial, because this was no longer an economic crime; it was treason.
From Compendium of Diverse Matters (Bowu Dianhui): > "In the twenty-eighth year of Hongwu [Note: Scholars generally place this in the thirtieth year], the Imperial Son-in-Law Ouyang Lun was culled for smuggling tea. The strictness of the early dynasty's tea ban was such as this."
From Complete Book of Official Studies (Shixue Quanshu): > "In early Hongwu, the laws were strict. When Imperial Son-in-Law Ouyang Lun violated the tea ban and was granted death, even Empress Gao did not plead for his pardon. It became a statute for successive reigns, hence no son-in-law dared to act recklessly thereafter."
The official rhetoric was "granted suicide," but the unofficial historical note Bowu Dianhui used an extremely bloody term: "culled" (撲殺 - battered to death). These two words accurately capture the ruthless, beast-like brutality of Zhu Yuanzhang at the peak of his fury.
In this storm, no one could escape. The Imperial Son-in-Law Ouyang Lun was culled; the arrogant servant Zhou Bao and his accomplices were executed; and those high-ranking Shaanxi officials who chose silence and complicity were all executed by association. Even Empress Ma (Empress Gao), renowned for her benevolence, knew this was a profound national taboo and dared not say half a word of mercy for her son-in-law.
Ultimately, Zhu Yuanzhang specially dispatched an envoy carrying three precious imperial seal edicts to console and reward the beaten grassroots clerk, Shi. This was not only a protection for the whistleblower but also Zhu Yuanzhang's silent mockery and warning to the entire bureaucratic system: When the high officials are rotten to the core, the emperor can only rely on the blood and tears of the lowest class to maintain the empire's defense lines.
This tea storm in the thirtieth year of Hongwu ended with his own son-in-law's head rolling on the ground.
Zhu Yuanzhang used the cruelest means to declare a fact to the world: in the strategic blueprint of the Ming Empire, tea was absolutely not a cup of quiet joy for scholars to sip while composing poetry. It was the Great Ming Empire's ammunition, the lifeblood of national defense, and a political red line that would crush anyone who dared to touch it.
Ouyang Lun's death became an ironclad law for the Ming Dynasty, ensuring that from then on, no imperial son-in-law ever dared to act recklessly with tea again.
