Sky Curtain: The Overlord Charges into Battle, Shocking Emperors of All Dynasties

"This...this looks so simple, isn't it just like a scaffold?"

"Oh? Easy? You go try it, and build it for me in a few months!"

"They also mentioned concrete. Could it be that this is the material used to build houses and bridges in later generations?"

Qin Dynasty

Ying Zheng stared at the 24 concrete pillars protruding into the rock strata; the number displayed on the screen filled him with dread.

68 meters, according to the Qin Dynasty's system of measurement, is about thirty zhang.

Even in the Qin Dynasty, constructing such tall buildings on the ground was extremely difficult.

That's 68 meters deep underground, thirty zhang (approximately 30 meters).

With the technological level of the Qin Dynasty, the deepest they could dig was no more than 17 zhang underground.

Modern archaeological measurements show that the deepest part of the Qin Shi Huang Mausoleum is about 40 meters, which is the limit for the entire Qin Dynasty.

"Concrete, is this material really that strong?"

Qin Shi Huang thought, "If this concrete could be used to build roads and even repair city walls, it would be difficult for gunpowder to budge it even a little!"

...

Under the vast sky, the ancient people watched the tower-building machine, the bridge tower rising section by section like bamboo shoots, and they roughly understood how these bridge towers were constructed.

In ancient times, when building tall buildings and constructing palaces, people already knew how to use wooden planks and bamboo poles to build them up at high places, layer by layer.

The different structures have different names, such as scaffolding, scaffolding, and scaffolding, etc.

At first, they were intimidated by the height and couldn't imagine how to build such a tall bridge tower.

Now that they saw the tower-building machine, they understood that the method was similar, except that the one used by later generations seemed to be made of iron, and they didn't see many craftsmen on it, nor any hydraulic system.

These words left the ancients completely bewildered, with no idea what they meant.

"Just how advanced has the technology of later generations reached?!"

[Along with the bridge towers, this massive piece of concrete was also poured; it's called the anchorage.]

[Its massive size, weighing a staggering 400,000 tons, is what allows it to firmly anchor the two main cables, enabling them to support the weight of the entire main beam. It is also known as a gravity anchor.]

On the other side, although there is no space to place a huge anchor, the mountain can be used as an anchor, with the anchor deeply embedded in the pre-dug tunnel, using the weight of the entire mountain to support the entire main beam.

With the bridge towers completed, the next step is to build the main cables. Just how thick are these two seemingly slender main cables?

The answer is that it has a diameter of one meter, enough for a person to walk on it with ease.

In the video, people wearing safety helmets and orange vests walk briskly forward on the main cable, with clouds drifting by and the Huajiang River rushing below. Just looking at this scene makes one's heart leap and admire the courage of the people in the video.

When faced with things beyond their control, humans cannot suppress the panic within them.

That's what it's like at high altitudes; the ancients projected themselves onto the artisans in those paintings.

Two hundred feet above the ground, there was less than a meter of space beneath your feet.

Just thinking about that feeling makes my legs go weak.

Hongwu,

"Four hundred thousand tons?!"

Zhu Yuanzhang nearly snapped his beard off, and gasped in shock.

He saw the conversion displayed on the sky.

"This huge rock actually weighs over five million shi?"

"That's like ballast on a ship!"

As an outstanding naval commander, Zhu Yuanzhang naturally thought of the ballast stones in a large ship, which also serve a similar function.

Zhu Yuanzhang then sighed with emotion.

"The craftsmen of later generations have such great courage, walking on flat ground a hundred feet in the air. With such courage, why be a craftsman? Wouldn't it be better to be a soldier?"

"However, such skills are still achievable by craftsmen in later generations. Diligence in their work deserves reward!"

Although Zhu Yuanzhang witnessed the firearms and bridge-building techniques of later generations,

However, deeply ingrained long-standing ideas, or rather, the extremely low status of craftsmen throughout ancient society, meant that this was a deeply ingrained tradition.

If you don't do things well, you'll lose your head; if you do them well, there's no reward.

Even in the early Ming Dynasty, Zhu Yuanzhang's household registration system stipulated the registration of artisans, dividing them into shift artisans and stationary artisans.

The situation was somewhat better for the craftsmen who worked in shifts, but those who worked in shifts in the capital had to pay for their own food and lodging and did not receive any wages. Their treatment was extremely miserable!

But how did these two massive main cables cross the 1400-meter-deep canyon and reach the other side?

For example, we can rely on it, such as drones.

[This drone will pull the first rope—the pilot cable—from one side to the other side. Next, this pilot cable will pull a thicker rope across the river, and then this thicker rope will pull an even thicker rope. This process will be repeated multiple times to erect a suspended temporary construction platform between the two towers.]

In the sky, a circular object extends several long strips from its perimeter, their blades constantly spinning. It flies through the canyon, attached to a rope, connecting the ropes to the bridge towers.

[Through the platform's traction system, you can pull the "stock".]

Each bundle is composed of 91 high-strength steel wires with a diameter of 5.7 millimeters, and the first bundle is the most crucial, as its installation error must be controlled within two millimeters.

Once all 217 strands are pulled into place, they are tightened and secured using a cable tensioning machine to finally form a main cable.

Once the main cable is laid, the main beam can be erected. However, the main beam obviously cannot be laid all at once, so it has to be broken down into 93 segments and assembled simultaneously from the middle outwards. Each segment weighs more than 200 tons, and the precise closure must be completed in the face of strong winds that may strike at any time.

[Subsequently, this world's highest bridge was completed and opened to traffic!]

The camera shifts to the bridge that spans a sea of ​​clouds and overlooks the Huajiang River. Cars speed across it, traversing mountains and rivers, shrouded in a thin mist, heading towards their hometowns.

[This is not the only bridge in Guizhou. Across Guizhou, there are 30,000 bridges of all sizes, forming a highway network that covers every inch of the land.]

One day, those who come from afar will discover that the saying "there is not three feet of flat land" is the biggest misunderstanding about Guizhou.

Because there is a man-made "highway plain" here.

And the people who grow up here will find that the distant places are no longer an unreachable world, and their hometown is no longer a place they can't return to.

In the video, young women dressed in traditional Guizhou clothing greet tourists from afar with beaming smiles.

The young children's innocent faces were full of anxiety and anticipation until the figures of their fathers and mothers came into view, and then the weary birds returned to their nests and the fledglings nestled in their arms.

Millions of mountains have been transformed into millions of paths.

A bridge spans the clouds, turning mountains into plains and natural barriers into thoroughfares.

At this moment, the dense text on the screen almost completely covered the entire display.

"A bridge spans north and south, turning a natural barrier into a thoroughfare!"

Long live the working class!

"It can make mountains bow their heads and rivers change their course!"

"I'm so moved I could cry!!"

"China is awesome!!"

"Long live the people!!!"