
The Great Wall of China is often imagined as the work of soldiers and conscripted peasants, but one crucial workforce has been largely forgotten: convicts. In this episode, Lucas and Luna explore the Ming Dynasty's systematic use of criminal labor to...
Loading summary
A
So we've talked a lot about the soldiers, the engineers, the Mongol defectors who built and defended the Great Wall. But there's one group we've barely mentioned. The ones who literally built it in chains.
B
Convicts.
A
Exactly. The Ming Dynasty used thousands of convicted criminals as forced labor on the Wall. It was a system that ran from the early 1400s right through to the dynasty's collapse. And it tells us a lot about how the Ming thought about punishment, the frontier, and the value of a human life. Take the early Ming under the Yongle Emperor. He had a huge appetite for grand projects. The Forbidden City, the Grand Canal, the new capital at Beijing. And he needed Labor. So in 1410, he issued an edict. Anyone sentenced to death for non violent crimes could have their sentence commuted to frontier service. Building walls, digging moats, repairing fortifications in the north.
B
So it was a kind of mercy then?
A
On paper, yes. In practice, it was often a slower death sentence. The work was brutal, the conditions harsh, and Mongol raids were a constant threat. But the state saved money. They didn't have to pay these workers, just feed them enough to keep them alive and. And they could deploy them to the most dangerous sections of the Wall. The system expanded under later emperors. By the mid-1500s, the Ming Shi Lu. The Imperial court records are full of reports from frontier commanders requesting more criminal laborers for their garrisons. The Ministry of Justice set up a whole pipeline. Convicted thieves, forgers, corrupt officials, all were sent north.
B
Were any of them political prisoners?
A
Absolutely. The Ming court was notorious for purges. Officials who fell out of favor, scholars who criticized the emperor, even whole families implicated in treason. They weren't always executed. Many were exiled to the frontier, a euphemism for convict labor on the Wall. One famous case is Cho Jun. No, not the scholar Qo jun from the 1400s, but a mid ranking official in the 1520s who wrote a memoir about his exile. He'd been caught up in a factional dispute. Sentenced to military exile at Datong. He describes being chained to a line of other prisoners, marched north for weeks, and then set to work quarrying stone in the winter cold.
B
What happened to him?
A
He survived, barely. His memoir records that he was eventually pardoned after five years. But many of his fellow prisoners died from cold, malnutrition or accidents. He notes that the local commanders didn't care. They just requested replacements from the capital. And it wasn't just men. Women convicted of crimes, especially those related to immorality like adultery or prostitution, were sometimes sent to the frontier too. They were assigned to domestic labor in the garrisons. Cooking, cleaning, repairing uniforms. But they were just as trapped as the male convicts.
B
So the wall was built by a whole army of unwilling people?
A
Yes, and the system was corrupt from the inside. Local officials often skimmed off the rations meant for convicts, or sold the able bodied ones to wealthy families as private servants. The Ming Shi Lu includes several edicts trying to crack down on this abuse, which tells you it was widespread. There's also a darker side. Some criminals were sentenced to death under the wall. A specific punishment where they were chained to the wall itself, left exposed to the elements and Mongol arrows. It was a kind of public execution that also served as a warning to others.
B
That's horrifying. Did any ever escape?
A
Escape attempts were common, but the frontier was a hard place to hide. If you ran, you'd either starve in the wilderness or get caught by Mongols who might sell you back to the Ming. The garrisons kept records of escaped convicts, and families back home could be punished in their place. Ironically, the convict labor system may have weakened the wall's defenses in the long run. Because the workers had no stake in the project, they often did shoddy work. Poorly packed, rammed earth, gaps in the stonework, walls that crumbled after a few seasons. Local commanders complained constantly about the quality of convict built sections.
B
So the very people meant to build the wall ended up sabotaging it.
A
Exactly. And the Ming court never really solved this. They kept sending convicts because it was cheap, but the cost was a wall that needed constant repair. By the late Ming, some frontier officials were actually petitioning to end the practice, arguing that paid laborers did better work. But the money wasn't there. So the next time you see a picture of the Great Wall snaking over a mountain ridge, remember some of those stones were laid by men who wished they were anywhere else. They built a monument to imperial power, but they themselves were invisible.
B
It really makes you think about whose stories get told.
A
Exactly. And that's a question we'll keep asking as we explore more untold corners of the Great Wall.
Title: The Great Wall’s Hidden Builders: Ming Convict Labor
Host(s): Lucas (A) & Luna (B)
Podcast: Fexingo History
Date: May 19, 2026
This episode delves into the often-overlooked human cost behind the construction of the Great Wall of China under the Ming dynasty, focusing on the vast numbers of convicts forced into labor. Lucas and Luna unravel how the use of criminal and political prisoners shaped both the wall itself and the broader meaning of justice, power, and suffering in Ming China.
Roots and Rationale
"So in 1410, he issued an edict. Anyone sentenced to death for non violent crimes could have their sentence commuted to frontier service." — Lucas (A) [00:32]
"The work was brutal, the conditions harsh, and Mongol raids were a constant threat." — Lucas (A) [01:04]
Expansion and Scale
Many laborers weren’t “common criminals,” but political prisoners swept up in court purges, accused of treason or slander, and their families.
"He describes being chained to a line of other prisoners, marched north for weeks, and then set to work quarrying stone in the winter cold." — Lucas (A) [02:10]
Gendered Labor
"Local officials often skimmed off the rations meant for convicts, or sold the able bodied ones to wealthy families as private servants." — Lucas (A) [03:17]
"Some criminals were sentenced to death under the wall. A specific punishment where they were chained to the wall itself, left exposed to the elements and Mongol arrows." — Lucas (A) [03:35]
"If you ran, you'd either starve in the wilderness or get caught by Mongols who might sell you back to the Ming." — Lucas (A) [03:58]
Because laborers had no stake, work quality was poor, leading to walls that crumbled or needed constant repair.
"Because the workers had no stake in the project, they often did shoddy work...walls that crumbled after a few seasons." — Lucas (A) [04:09]
The result: a monument to imperial power, built by invisible, suffering people.
"They built a monument to imperial power, but they themselves were invisible." — Lucas (A) [05:12]
Lucas and Luna shine a light on a shadowy chapter of the Great Wall’s history: the lives and deaths of its convict laborers. Their stories—often unrecorded—reveal both the ambitions and the cruelties of the Ming state, and call listeners to remember not just the towers and stones, but the invisible millions who built them.