Sensing the anomaly, everyone became vigilant.

Then they began to move forward cautiously, and as they continued to advance, the oncoming wind became stronger and stronger.

This time, they walked forward for about two minutes.

Suddenly, the wind in front of them became weak, indicating that they might have been very close to the open area.

"Yingxue be careful..."

Thinking of the key point, Yang Shurou reminded without looking back: "We may already be very close to that area, and I'm not sure what lies ahead." ”

That's right.

The winds on the front weakened, indicating that they were close to the open area.

In this case, even Yang Shurou herself must be cautious, otherwise no one is sure whether there will be an accident in this unfamiliar environment.

This is what Zhang Qiu taught her at the beginning.

No matter what level of strength you have, you still have to be vigilant when facing the activities of the inverted fight.

After all, the most dangerous thing for them is the unknown.

Really!

As they continued on for a minute, the narrow tunnel disappeared and was replaced by a large, naturally formed underground mountain stream.

At this moment, everyone is standing on the edge of the cliff, and on the left and right sides of this mountain stream are two unknown areas that extend into the darkness.

Under the cliffs on both sides, there is a foothold that is so narrow that it does not exceed one meter, and it extends forward into the invisible darkness.

Everyone subconsciously looked down.

Grunt!

Suddenly, several people present couldn't help but swallow their saliva.

It's just because the mountain stream under their feet is a pitch-black bottomless abyss, and if they fall from it, they will definitely be shattered, and they can't even see how deep it is.

At the same time, several people looked up.

I saw that there was a dilapidated suspension bridge under their feet, which directly crossed the mountain stream in front of them and connected it with the hole under the opposite rock wall.

It seems that only through this drawbridge can you continue deeper into the tomb.

"Stand back!"

Seeing this, He Hongbo hurriedly beckoned everyone to step back.

If you accidentally step on the air and fall, it will definitely be more broken than Lego!

At the same time, after seeing this scene, the netizens in the live broadcast room were also shocked by the underground mountain stream in front of them.

"It's... It's not a movie, is it?! ”

"Inside a burial pit, how can there be such a vast underground mountain stream?"

"Absolutely not wrong, I have seen it with my own eyes, where the hell is this?"

"! The scalp is numb, this mountain stream can be said to have hollowed out a space the size of a football field underground, right? How much manpower and material resources do you have to do this? ”

For a while, everyone in the live broadcast room launched a barrage, and no one could imagine how the ancients excavated such an underground mountain stream deep underground.

"Sister Shurou."

At this time, Zhang Yingxue couldn't help but ask, "Do we want to pass over this suspension bridge?" ”

Joke!

Although it seems that this suspension bridge will allow them to continue deeper into the tomb.

But after so many years, who can guarantee whether this suspension bridge is safe or not, and if it breaks, it will be miserable.

In this regard, Yang Shurou also frowned and said: "If nothing else, this suspension bridge is the best path. ”

"However, if this burial pit was built during the Qin Dynasty, then no matter what material is used to build the suspension bridge, it is estimated that it has been seriously oxidized by now, and it is likely that it will not even be able to support the weight of a person."

That's right.

It's too long ago.

Even if Yang Shurou is confident that she can pass, what about Zhang Yingxue and them?

But at this moment, Professor Wang on the side suddenly spoke: "Not necessarily, according to our previous development of the burial pit of the First Emperor's Mausoleum, we found that most of the metal products in the Qin Dynasty burial tomb will be made of bronze. ”

"After anti-oxidation measures, these bronzes still retain a high density of toughness, so if we pass over the bridge one by one, they may still be able to hold up."

Hearing this, several people present fell into deep thought.

The public says that the public is justified...

But if they walk on the suspension bridge, they may pay with their lives.

In the end, Zhang Yingxue, who had never spoken, suddenly proposed: "Maybe we can find a substitute to try the load-bearing capacity of the suspension bridge..."

Hearing this, several people present also nodded.

Next, after some discussion, they found a few rocks with enough weight, crashed into a backpack, and threw them hard at the drawbridge.

Bang!

The backpack full of stones weighed at least sixty or seventy pounds, and after smashing on the suspension bridge, the entire suspension bridge shook violently.

Several people hurriedly looked at it, only to see that although the suspension bridge looked shaky, it still accepted the Lord. However, just when they thought they were safe and sound, the backpack rubbed against the position of the suspension bridge, and a cluster of flames quickly ignited.

The blue flame burned slowly, and it lasted for about ten seconds before slowly extinguishing.

Hiss!

Seeing this scene, everyone present gasped.

At the same time, netizens in the live broadcast room also exploded.

"! How did it burn? ”

"What's going on, what the hell is going on?"

"How can a flame burn? Moreover, how is this flame still blue? ”

At this moment, Zhang Yingxue also swallowed when she saw the blue flame.

Thankfully, they did.

If you had rushed up before, I'm afraid you would have been burned to death, right?

But at this moment, Yang Shurou looked carefully at the stone slab on the suspension bridge in front of her, and after a few seconds, she suddenly seemed to have found something.

"No, it's not a fire!"

Yang Shurou pointed to the stone slab on the suspension bridge and analyzed it seriously: "You see, after the stone slab was burned by the flames, there was no trace of blackening, and the flames were still blue!"

"If I'm not mistaken, the blue flame just now should be phosphorus fire."

"This drawbridge must have been smeared with white phosphorus, so the stone rolled over to make a blue flame."

What?

Hear Yang Shurou's words

If you look closely, they also suddenly realize.

That's true.

I saw that there were no traces of burning on the slate.

Not only that, but if you look closely, you can see that there seems to be a layer of alkali attached to the stone slab of this suspension bridge.

Sensing this situation, everyone present immediately breathed a sigh of relief, but the netizens in the live broadcast room saw this scene, but some people didn't understand.

"What does that mean?"

"yes, what does phosphorus fire mean, is it a blue flame?"

"I don't understand the upstairs, I'll give you a science popularization! This is a chemical reaction, and the so-called white phosphorus is a chemical substance, the most notable feature of which is a very low ignition point. Even the slightest friction of air will ignite a flame, and the flame will appear blue, but this flame is a cold flame of zero degrees, and even cotton cannot be ignited! ”

"! Chemist upstairs! ”

"What I said upstairs is right, and white phosphorus has a good antiseptic effect of leeks, if it is wiped on the suspension bridge, it can indeed play a good antiseptic measure!"