Chapter 42 The majestic Great Wall, the crystallization of Chinese wisdom!
Anna opened her eyes wide in surprise: "Then, how was such a huge Great Wall built?"

You know, there wasn’t any heavy machinery at that time!

Even with advanced technology today, building the Great Wall is not easy.

"There were no machines at that time, so all the materials were carried up by people."

“So many bricks, were all carried up there by people?”

Chen Lu nodded: "So you can imagine how difficult it was for the ancients to build the Great Wall."

The Great Wall, which is more than 420 kilometers long, used billion bricks!
Since Qin Shihuang, almost every dynasty has repaired the Great Wall. After more than two thousand years and more than ten dynasties, the Great Wall, which stretches for thousands of miles, was finally built, a world architectural wonder!
Foreign netizens were shocked when they heard these numbers.

[420 billion bricks? How many times can they circle the earth if connected together? ]

[It is hard to imagine that such a magnificent Great Wall appeared in ancient times when there were no cranes! ]

[The perseverance of the Chinese people is truly admirable! ]

【Compared to the Great Wall, the pyramids are nothing! 】

To build such a magnificent Great Wall, hard work alone is not enough; it also requires the wisdom of the Chinese people.

The construction of the Great Wall is inseparable from surveying technology, construction technology, and mathematical calculation technology.

And the ancestors of the Chinese were very good at all these!

As early as the Yellow Emperor period, China had established a complete astronomical system including the Five Elements and Twelve Zodiac Signs.

The Great Wall looks like a dragon from a distance, with Shanhaiguan as the head of the dragon, Jiayuguan as the tail of the dragon, and other locations corresponding to different celestial bodies.

Dayu used measuring tools such as "pipe, rope, and ruler" to control floods.

During the Warring States Period, large-scale water conservancy projects such as Dujiangyan and Zhengguo Canal were built.

The Nine Chapters on the Mathematical Approach from the Western Han Dynasty recorded advanced measurement methods such as the Pythagorean theorem.

The Qin Dynasty's "Soushanji" is the earliest work on Feng Shui.

The construction of the Great Wall was adapted to local conditions and followed the shape of the mountains, which greatly reduced the amount of engineering work.

Most of the materials used are locally sourced.

The mortar used in the Qin Dynasty was only slightly weaker in strength than concrete.

It was only when these crystallizations of wisdom came together that such a magnificent Great Wall was built!
Even after thousands of years, it still stands tall!
At first, Anna was very excited and jogged all the way.

I soon got tired and slowed down.

Climbing the Great Wall requires endurance, and you can't just rely on momentum.

Chen Lu smiled and said, "Are you tired? Do you want me to carry you?"

Anna shook her head: "No, I can climb the whole way by myself!"

It took less than an hour to climb.

If I let Chen Lu carry me now, he will definitely laugh at me!

Just hold on a little longer!
"What is this, dear?"

Anna pointed to the piers on the city wall. She had seen several of them along the way.

"This is a beacon tower, used to transmit signals. When an enemy invades, light the beacon so that others can see the smoke and prepare in advance."

"But inside the mountains, with just this little bit of smoke, can you really see anything?"

Chen Lu explained: "The defenders at the front light the beacon fire, and the ones closest to them will also light the beacon fire after seeing the smoke, and pass the message on in turn, which is much faster than sending a message on horseback."

Anna suddenly realized: "Is it like dominoes?"

"so smart."

Chen Lu reached out and touched her hair, and Anna enjoyed it like a kitten.

[It turns out that the Great Wall is not only a defensive fortification, but also a warning! ]

[Lighting beacons to convey enemy information? The Chinese are really smart! ]

[Even if you give me ten brains, I still can't figure it out! ]

[Shit! Why are our ancestors so stupid? ]

The two of them checked in and took a photo at the Hero Monument on the fourth floor of the north building.

Heading north, we finally arrived at the eighth floor of the north building.

There is a watchtower here, named Sun Viewing Terrace, which is a good place to overlook the Great Wall.

Most people would take a break here and then continue climbing or return the same way.

Anna sat down and wiped the sweat from her forehead.

Her hair was stuck to her forehead.

Climbing the Great Wall is not as easy as imagined.

"Phew, I'm so tired!"

[Look at how tired our princess is. I feel so sorry for her! 】

[This man has no sympathy for women! ]

[If it were me, I would hold the princess in my arms as I climb the Great Wall. ]

[Climbing the Great Wall while holding your arms? You are such a genius! ]

Chen Lu tore the bread, opened the water cup and handed it to Anna.

"Eat something, drink something, and replenish your energy."

It was beyond his expectation that Anna could climb to the eighth floor of the north building in one breath.

I originally thought that she couldn't even crawl two steps and would start asking me to carry her.

I didn’t expect Anna to have such great perseverance.

In that case, why not take her to climb Mount Tai next time?
There is also Mount Huashan and Mount Huangshan. Climb all the beautiful mountains and rivers of China!

If the audience in the live broadcast room heard this, they would definitely curse him as a devil for torturing Her Royal Highness the Princess in various ways!

"Let's go into the enemy tower and take a look. The view is great."

Anna stood up and took Chen Lu's hand.

The two men looked down from the enemy tower and had a panoramic view of the scenery.

Anna looked at the Great Wall. It twisted and turned like a giant dragon hovering over the land of China.

Crossing the mountains and across the vast plains.

Connecting heaven and earth, communicating the past and the present!
She truly felt the vicissitudes of history!

The road under your feet carries the weight of history, and the wind from the Great Wall blows back the past.

Every grain of sand and every brick tells an ancient story.

The wind from a thousand years ago blew through the years and blew on Anna's face.

Standing on the Great Wall, she seemed to be able to hear the cries of the ancients and feel the hardships they went through when building the Great Wall.

"Honey, let's take a picture!"

Anna handed the phone to a tourist.

"Please, take a photo for us."

Anna hugged Chen Lu's neck and smiled like a flower.

"Okay, both of you come closer. Handsome guy, smile more happily! Oh, three, two, one, eggplant!"

"Thank you!"

Anna posted a message on WeChat Moments: Look, my boyfriend and I are here to climb the Great Wall!
"Should we continue to climb, or go back the way we came?"

"Of course we have to keep climbing!"

Anna looked very serious. She had already climbed this far, so how could she give up halfway?
Definitely climb the whole route!
"There is no turning back if you go forward, and the next section is very steep," Chen Lu reminded.

The section from the North Eighth Floor to the North Ninth Floor is the steepest along the entire route, so it is also called the Hero's Slope.

"It's okay, let's continue!"

"Okay, let's keep climbing."

Chen Lu let Anna walk in front and he could protect her from behind.

Having said that, when they reached the Hero's Hill, Anna still hesitated.

Is this too steep?

It looks so scary!
The person next to him just took two steps and then fell to the ground in fright.

(End of this chapter)