"Who lights candles and blows the lights? It sounds quite powerful!" When pulled outside, the empress was still a little confused.

"It's just a legend, but it's actually lacking oxygen." Ren Baqian sat cross-legged on the ground and smiled.

"Oxygen? It seems that I have heard of it!" The empress thoughtfully and waved her hand. Qing Yuan and Hongluan raised two chairs.

"There are actually different components in the air, such as nitrogen, hydrogen, ozone, oxygen, carbon monoxide, carbon dioxide, and various inert gases. Among them, oxygen is what biological survival needs. If there is no oxygen, it will suffocate and die." Ren Baqian put his arm on a chair, and the person was too lazy to get up while sitting on the ground.

In fact, the shaded ground is cooler.

In addition, some gas compositions in this world are different from those of the earth. This is the conclusion obtained by the institute through some microorganisms. However, Ren Baqian did not put a bottle of air back, so naturally he did not verify it.

The empress sat on a chair and waved: "Come on wine!" while allowing Baqian to popularize science.

"I don't know how long it has been closed. Some of the microorganisms that cannot be seen in the naked eye will consume oxygen. Over time, it will be deficient. If you enter, ordinary people will die in a few minutes! Moreover, some other gases may be covered in dust, which are harmful and unhealthy, so at least they must be ventilated before they can enter." Ren Baqian explained to the empress. The Tong Zhenye and the officials of the Ministry of Works next to him felt fresh and couldn't help asking: "Why did the torch be extinguished?"

They know this phenomenon, but they don’t know why.

"It's because of oxygen. Not only organisms need oxygen, but even flames also need oxygen. If there is insufficient oxygen, the flame will be extinguished." After Ren Baqian said this, they found it even more interesting. The so-called oxygen can play a lot of roles.

"According to normal circumstances, it takes at least half a day to ventilate." said an official from the Ministry of Industry.

"It's easy to be faster. Find someone in the passage and push their hands towards the door to drive the air flow. The air exchange will accelerate, and the time will be shortened a lot."

"Have broken heart!" the empress called softly.

"I'll make arrangements, Your Majesty!" Xinzhe never responded slowly in official affairs, and immediately understood.

Soon, the sound of empty palms slapping the air in the big pit, causing a strange sound of breaking through the air, like waving a giant, but it was a little different.

This is much better than using a fan or something!

"Master Tong, what period does this stay?" Ren Baqian asked.

Tong Zhenye shook his head: "I don't know much about this."

Ren Baqian had a vague idea in his mind. This passage was probably left behind when the human race was just driven here, or it was not long before.

Tengsnake...even if it is not as good as the Qilin and the Dragon, it is not far behind. It is also a legendary creature.

Only then will it be most likely to appear.

If that's the case, there must be someone here who wants to leave something behind.

Then Ren Baqian also had some guesses about the things on the wall.

"Your Majesty, what do you think of the mural? " Ren Baqian spread his palms on the empress's knees, and the empress put a fruit in his hand.

This movement was smooth and neither of them hesitated at all, but Tong Zhenye's eyebrows jumped straight.

I thought of the woman from that time for no reason.

"Do you have an idea?" the empress said casually.

"Your Majesty has a guess, right?" Ren Baqiansan chewed the fruit clean.

"I think it may be a roadmap." Ren Baqian said bluntly.

"It is the road map for the 60,000 mountains. The place we saw at the beginning was the Zhulinping. And when we arrived near the door, it was the depths of the 60,000 mountains." The empress said directly.

"Your Majesty can recognize the other party's painting skills!" Ren Baqian was very impressed.

It is also a kind of strength to be able to recognize a map of this level.

However, the Empress's words also made him confirm what he was thinking.

"How come there is a road map for 60,000 mountains here?" Tong Zhenye was slightly stunned.

"Have you forgotten what I said? But it's just a guess. You have to observe and compare it to find out." The empress said to Hongluan: "Go to Qingxin Palace, there is a map near the pillars and forest screen left by Haoguo. You can pick it up."

Then he snorted: "This map was drawn when Haoguo attacked the mountain village."

After Hongluan left, Tong Zhenye's face was in a state of uncertainty. He remembered what His Majesty had said.

The human race was driven from a distant place, with less than 100,000 people. Some of them remained in the 60,000 mountains to defend the ancient race, while the others came to the plain to establish a country.

And among the 60,000 mountains, there are many races. On the other end of the 60,000 mountains, there are so-called 10,000 races.

When the Empress said it, everyone in the court was shocked.

It was just that the matter was too incredible and there was no other news, so everyone gradually put the matter behind their minds.

The passage below is not simple, and the white jade ground alone is not something that ordinary people can do. If the road map on the wall is really a road map in the mountains of 60,000, combined with what the empress said, it is indeed very likely that it was left behind during that period.

After taking the map, Ren Baqian glanced at it. It was much more decent than the things on the wall below. At least it could be seen that it was a map.

After watching for a long time, he couldn't see why, so Ren Baqian had to give up.

After another half an hour, everyone was probably about the same, so they went down to the passage again and did not rush into it. They first stayed at the beginning of the mural on the wall, and took the map and compared it, and then it was easy to see the problem.

"This is the pillar screen, which is similar to the location on the map. Yes, it is indeed there." Ren Baqian pointed at the holes on the wall and pointed out with his fingers. One hole is a mountain.

"This is Yusan Mountain, this is Heiling, this is Pingliang Mountain..." Tong Zhenye compared one by one.

"Your Majesty, this is the end of the map. There is only a half-month distance between the pillars and forests on the map." Tong Zhenye said while gesturing.

However, on the wall, it is only one meter.

And the murals on this wall are more than 40 meters in total...

If it is true, it means that the route drawn on the wall will take at least two years.

"This is Qianlong Cliff! They passed by here!" The empress calculated while walking, then pointed at one of them.

That position is a strange-shaped sign. After hearing what the Empress said, after looking at the sign carefully, she could barely guess that it was a dragon head sign.

This logo is so magical!

Ren Baqian even believed that what he drew was a piece of shit with two wooden sticks in it...

It takes at least one and a half months to get off from Yacheng, pass by Zhulinping, and arrive at Qianlong Cliff, and there is a speed of mounts to rush.

And on the wall, it was only one and a half meters away.

Looking at the dozens of meters long wall behind, everyone took a breath.

Now everyone finally has some idea of ​​how big the sixty thousand mountains are.

According to the length of this picture, it will take at least two years to get out.

There is a scribing line on the wall that winds from beginning to end, which is the route of those people at that time.
Chapter completed!