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22-07-2025

Why was the Great Wall of China built?

6 min read

Ah, the Great Wall of China. A monument that inspires tourists, fascinates historians... and perplexes hikers who find themselves climbing its countless steps. But before being a selfie spot, this immense construction had a much more serious purpose. So, why build such a wall? Was it to block out noisy neighbors? To draw a border like you draw a line with a highlighter? Spoiler: it's a little more complicated than that.

Let's get down to business together. We promise to keep the old stones, but we'll leave the dust aside.

Defense against invaders: the basis of the project

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Before becoming a national symbol or a must-see tourist site, the Great Wall of China had a much more... warlike purpose. And yes, thousands of kilometers of walls aren't built just for the sake of architecture.

Not very nice neighbors

At the time (and we're talking about 220 BC), China faced constant threats. It must be said that its northern neighbors, especially nomadic tribes like the Xiongnu (the ancestors of the Huns, basically), weren't coming for tea. Raids, looting, lightning attacks... even convoys transporting precious Chinese fabric weren't spared. Let's just say that good neighborly relations were rather strained.

So, to keep these unwanted visitors from barging into their homes, the Chinese rulers said, “What if we built a wall? A big one. A long one. Very long.”

A wall, but not all at once

We often imagine a gigantic project launched all at once by a megalomaniac emperor. But in reality, the Great Wall is a puzzle built over centuries. Several dynasties took on the task: Qin, Han, Ming… Each added their own small (or large) stone to the edifice.

So no, this isn't a single, overly ambitious project by one guy. Rather, it's a series of strategic responses to the dangers of the moment. A kind of Windows-style security update, but a brick wall version.

A tool to control borders and flows

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Protection is good. But the Wall also served to keep track of who's coming and going —a bit like a nightclub bouncer at the entrance to a kingdom.

A customs office before its time

Thanks to its numerous watchtowers and surveillance posts, the Wall allowed for the monitoring of movement. No one could pass unnoticed. There were crossing points, a sort of "border gate" where travelers, merchants, and messengers were inspected.

So yes, if you were a trader back then and you forgot your antique equivalent of a passport, you could turn around.

Manage trade

Paradoxically, the Wall didn't just serve to keep people in. It also regulated trade. By controlling who could enter and leave, the authorities ensured that trade was safe, taxes were collected, and caravans weren't attacked anywhere.

In short, the Wall was a bit like a tax office and a border police force rolled into one. Less fun than the idea of ​​a legendary wall, but much more useful in everyday life.

A communication tool (yes yes)

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So, you're thinking, "A wall for communication? Sounds like a scam." And yet, it's true. Not for chatting with your neighbors, but for getting information out quickly and efficiently.

Signals as far as the eye can see

Imagine a chain of strategically spaced watchtowers, with guards—sometimes perched there for days in their Chinese slippers —scanning the horizon day and night. As soon as a threat was detected, signals would be sent out: fire, smoke, drums… A true instant messaging system, ancient version.

The result? In just a few hours, an attack spotted at one end of the Wall could be reported hundreds of kilometers away. No need for carrier pigeons, just a good fire and well-trained men.

A well-oiled organization

For it to work, discipline, precise rules, and, above all, competent people were required. A whole network of soldiers and messengers was on duty, ready to respond to the slightest alert. There was no room for error or post-lunch naps.

The Great Wall was therefore as much a stone wall as a highly efficient surveillance and communications system. As it turns out, infrastructure isn't always sexy, but it is useful.

A demonstration of imperial power

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What if we told you that the Wall also served to impress? Yes, we're human, and sometimes we like to show off.

Show who's boss

When you build a wall thousands of kilometers long, you send a clear message: “This is our home, and we mean business.” It was a way for emperors to demonstrate their authority, their wealth, and their ability to mobilize immense resources.

It's a bit like landing a yacht in front of your house, except here the yacht is the size of a country.

Calm the spirits within

But this message wasn't just for enemies. The citizens themselves saw the Wall as a symbol of protection and stability. Essentially, it said, "Look, the emperor is thinking of you. He's protecting you. He's strong. He's there." Even Chinese clothing , often adorned with imperial motifs or protective dragons, echoed this idea: order and security are everywhere, even in what you wear.

It helped strengthen the sense of belonging and prevent rebellions. Because a people who feel safe are a people who complain less. At least, in theory.

The result? In just a few hours, an attack spotted at one end of the Wall could be reported hundreds of kilometers away. No need for carrier pigeons, just a good fire and well-trained men.

A colossal workforce... and exploited

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Well, let's not kid ourselves, building the Great Wall wasn't a walk in the park. And for those who worked on it, it's not exactly a holiday memory.

Thousands of arms, little rest

The workforce was primarily composed of soldiers, forcibly conscripted peasants, and prisoners. Suffice it to say that no one had really marked "masonry" as their career plan. The conditions were harsh: heat, cold, disease, and exhaustion.

And given the length of the Wall, the work was never finished. It was a bit like repainting an ocean liner at sea: as soon as you finish one side, the other already needs to be redone.

Lives sacrificed

The human cost of the Great Wall was enormous. It is estimated that hundreds of thousands of people lost their lives there. Some even say the Wall is “the longest cemetery in the world,” as the bodies of dead workers were sometimes buried directly in the structure. Throughout the centuries, relics from this era, such as tools, fragments of cloth, and even a pair of tattered Chinese men's trousers , serve as reminders of the extreme conditions in which these workers lived and died.

A dark reality, but one that reminds us that behind every stone, there is a human story. And often, suffering.

And today, what do we do with it?

As you can see, the Wall had very concrete functions. But today? Does it still serve any purpose, apart from looking pretty on Instagram?

A tourist treasure

Obviously, the main current use is tourism. Every year, millions of visitors from around the world come to set foot on its ancient stones. Selfies, hikes, guided tours... the Wall is a global star.

And it deserves it. Because beyond the postcard, it tells the story of a country, its fears, its ambitions, its greatness, and its mistakes.

A national symbol

Today, the Great Wall is a powerful symbol for China. It represents resistance, tenacity, and the ability to build something great. It is part of the national identity, much like the Eiffel Tower in France, but with more steps.

And even though it no longer protects against invaders, it continues to unite people, inspire pride, and remind us that some historical facts are worth exploring , even if we think we already know everything.

Conclusion: one wall, a thousand reasons

So why was the Great Wall of China built? To defend, monitor, impress, communicate, and establish imperial power. Nothing less.

It's not just a stone barrier. It's a living work of art, a testament to ingenuity, suffering, strategy, and national pride. A kind of wall-mounted Swiss Army knife, if you will.

And if you ever have the opportunity to visit, think of those who built it, those it protected, and the incredible historical journey it represents. Even if your calves remind you of the effort for three days.


Be aware