However, it is certain that the ancient Euridians must have used it to do something big.

Otherwise, they would not have gone to such great lengths to dig through the cave.

Make these flashy things.

Standing in front of the crane.

Lu Yu pondered for a long time.

Then, a casual glance.

Suddenly, his heart moved.

He shifted his attention to the abandoned stones.

The purpose of building a crane is nothing more than to move heavy objects.

Otherwise, it would be meaningless.

The long-eared stone statues of Euridia are all over the island.

Large and small, they can be seen almost everywhere.

In the primitive society where productivity was not developed and all labor depended on manpower, it was not an easy task to move these stone statues to the right place.

Therefore, the crane came into being.

In addition.

The underground water system on the island is very large and connected in all directions.

Using a crane to move the built stone statues to the boat raft by water can perfectly solve the problem of transportation.

A flash of inspiration flashed in his mind.

Gradually, Lu Yu figured out the whole story.

After telling the audience about his conjecture.

He continued:

"Put the stones on the raft, and when the rainy season comes, the water level of the underground river rises, and the raft will naturally float up and be transported to the place you want to transport it to."

"From this, we can judge that there is definitely more than one cave on the entire north bank."

"The transportation system of the Oridians should be spread all over the island..."

"The ebb and flow of the underground river is completely different from the tides of the sea. The only way to control the water level is to reach the peak of groundwater storage. When the atmospheric precipitation reaches the expected level, the water level of the river will naturally rise, generating huge buoyancy."

"In addition to the seasonal climate, the key to judging the rise of the underground river water level is the most intuitive method, that is, the spring of the temple."

"It is clear at a glance and seamless. They should have used this method to complete this impossible task..."

Hydraulic transportation has existed since ancient times.

As early as the primitive society, the tribes living by the water had learned to dig wood to get boats instead of walking.

The Khufu ship in Egypt and the Grand Canal in China are all outstanding representatives of water transport.

Speaking of which, the clever ancient Euridians should also be among the best.

Taking advantage of the unique environmental advantages of the island, they dug out countless natural canals for themselves.

The impossible became possible.

In order to verify his idea, Lu Yu then explored the vicinity of the crane.

The result.

He really found a lot of strong evidence.

There are many crane parts that have long been petrified on the ground.

He picked up a copper handle ring from the ground and said excitedly to the camera:

"Friends, it seems that my analysis should be correct."

"Back then, they used this huge thing to transport stone statues, materials, and even supplies to various parts of the island through this ancient canal."

"When the water level of the underground river dropped, people would move the corresponding supplies to the raft, and when the water level rose, the raft would float up."

"Ladies and gentlemen, this is the wisdom of mankind. They are good at discovering and learning from one thing, thus building one brilliant civilization after another."

Looking at the dilapidated fortifications in front of them.

The audience naturally imagined the busy scenes in the cave back then.

For the vain fantasy of the ruling class.

The coolies sweated profusely and produced and lived in the dark underground.

Working hard until the tribe was destroyed.

This seems sad, but it is inevitable in the development of history.

Because wisdom always costs a price.

So is social development.

However, for Lu Yu, none of this matters.

The most important thing at the moment is that he accidentally discovered a very convenient way home!

As long as he wants, this ancient canal should be able to transport him to any place on the island!

Instead of going through the bumpy road on land, taking the waterway is really a good way.

Thinking of this.

He raised the corners of his mouth and said to the audience with a smile:

"Since the Oridians have provided us with this convenience, we must make good use of it."

"So, brothers, this time I decided to be lazy and build a raft on the spot, and let the dark river take us home!"

After having this idea, Lu Yu immediately took action.

Left the cave.

Returned to the woods, took out the stone axe, and began to collect the necessary materials for building a raft.

As soon as I heard that Lu Yu was going to build a raft.

The rhythm of "Yu Bi Chen Hao" in the barrage was instantly brought up.

So happy.

"Yu Bi Chen is online!"

"The anchor is really a clever little ghost!"

"What is the Yu Bi Chen meme? Please tell me!"

"The hand is funny!"

"Wait for the car to overturn, post a post as proof!"

"Haha!"

...

Five minutes later.

Holding a large bundle of wood, Lu Yu returned to the camera.

After taking a breath, he immediately started to build the raft.

The production process is still the same.

First lay the base, and use wooden sticks to splice the boat surface.

Very simple.

Fortunately, I brought enough blades this time. If I only rely on handwork, I don’t know how long I will be busy.

Soon, it took an hour to split, check and tie.

A simple small raft appeared in front of the audience.

"Okay, brothers, this is almost done."

"Now let's go in and try it. If possible, let this guy take us a ride."

Back to the cave again.

Lu Yu simply sorted out the various equipment on his body, then put the raft on the river, picked up the paddle, and sat on it.

A homemade raft is definitely incomparable to a professional canoe.

The buoyancy itself is poor.

So as soon as he sat on it, the whole raft sank into the water.

The cold river water suddenly reached Lu Yu's waist.

The draft is very deep.

In addition, due to the rapid flow of the water and the lack of control.

The boat almost capsized.

Fortunately, there was a paddle in his hand to control the balance.

Otherwise, it would have really capsized this time.

In the live broadcast, Lu Yu waved the paddle and danced wildly.

The splashing water made the camera lens wet.

Although the content was a bit blurry, the audience still laughed and kept posting comments:

"It's a car accident!"

"Yu must sink!"

"Fuck, it feels like that!"

"I've guessed the ending before it even started!"

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