Seeing that he was about to dig the iron gate buried under the soil, Ye Tian suddenly stopped digging and walked up from the pit.

Seeing his actions, Anderson asked puzzled:

"Steven, you are about to dig the iron gate below, why are you stopping? Is there something wrong?"

Ye Tian looked at this kid, and then gave the answer with a smile.

"Of course I'm going to stop digging for a reason, no one knows what's going on in that chamber deep underground, and it's not known if there's a ventilation system.

If there is no ventilation system, it means that the air inside has not circulated for more than 200 years, and it must be dirty and even toxic.

To be on the safe side, we must now put on gas masks before we can dig up the last layer of dirt and open the iron gate under the dirt."

Anderson suddenly nodded in agreement.

Immediately afterwards, the two of them each picked up a gas mask and put it on their faces, and Ye Tian also put on gloves.

After taking good precautions, Ye Tian immediately jumped into the pit again and began to continue digging.

It took less than a minute, and the last bit of dirt was also dug up, and the iron gate that was originally covered with dirt was immediately exposed!

It was a rectangular iron gate about one meter long and two or three meters long and about one meter wide, which looked very heavy and strong, and a huge lock hung on it, both the iron door and the padlock were rusty.

The iron gate is surrounded by a circle of granite, the same material as the two granite strips that have just been pried open, apparently from the same source.

The first time he saw this iron gate, Anderson danced and celebrated, but unfortunately he couldn't speak or cheer, which was a bit regretful!

Ye Tian was the same, although he had seen all this in front of him many times with perspective, but seeing this rusty iron door again at this time still made him excited!

After silently celebrating, Ye Tian began to clean up the dirt around the iron gate.

In the blink of an eye, the clean-up work has also been completed, and this iron door that has been closed for more than 200 years can be opened, so that the treasure hidden in the underground secret room can be seen again!

Ye Tian jumped out of the pit again, put the folding sapper shovel in his hand on the floor, then took out the hydraulic tongs from his handbag, and then jumped into the pit again.

"Smack!"

With a crisp sound, the rusty padlock on the iron door was cut directly by the hydraulic pliers, and it was effortless!

However, Ye Tian didn't immediately pull up the iron gate and find out!

He waved at Anderson, telling him to step back a little bit to avoid any surprises.

This is a secret door that has been closed for more than 200 years, and God knows if there is any mechanism behind the door that hurts people the moment the iron door opens.

Of course, Ye Tian knows better than anyone whether there is a mechanism behind the iron gate, but some performances are still essential, so it is not realistic!

Anderson took a few steps back as instructed, stood three meters away, stretched his neck forward, his eyes were firmly fixed on the iron door, staring closely at Ye Tian's movements, his eyes were full of anticipation and a little worried.

Ye Tian also changed his position, he came to the side of the iron gate and stood still, and then he pulled up the heavy iron gate that had been closed for more than two hundred years.

The iron gate was almost completely rusted, and even Ye Tian had to pull it with a little effort.

"Squeak!"

There was a tooth-wrenching sound of metal grinding, and it was uncomfortable to listen to.

In Ye Tian's hands, the iron gate was pulled up little by little, and the speed was very slow.

This is what Ye Tian did on purpose, it was done for Anderson and others to see, if there was any mechanism in the secret passage, he would immediately let go and close the iron door in an instant to ensure the safety of the people standing outside the door.

No bullets, no crossbow arrows, no poisonous smoke, monsters and the like, nothing!

Some were just a swarthy hole, a series of moss-covered steps that led to the depths of the earth, and the further down they went, the darker and darker they were, until nothing could be seen!

"Bang!"

Ye Tian completely lifted the iron door and leaned against the granite next to the earth pit, making a loud noise.

After opening the iron door, he didn't immediately look into the dark passage, but paused for four or five seconds before looking at the dark secret passage that went straight to the depths of the earth, although he already knew the situation inside!

As you can imagine, there is nothing to be seen except for the moss-covered steps and the bronze candlesticks from the early 18th century on the walls of the tunnels!

An arc-shaped bend at the end of the dark passage blocked Ye Tian's sight, and he didn't know if there was a mechanism behind that arc bend!

After glancing at the situation in the dark passage, Ye Tian stepped into the pit, came to the handbag, took out the strong flashlight and air detector from it, and returned to the entrance of the dark passage again!

At the same time, he also waved his hand to let Anderson come over, the entrance to the secret passage was safe, and there were no mechanisms.

Seeing his gesture, Anderson immediately rushed over, looking impatient.

When he came to the entrance of the dark passage, this guy immediately looked into the dark passage, and his expression was extremely excited.

At this time, he couldn't wait to have wings, and flew directly into the secret passage, and flew into the secret room deep underground to see what secrets were hidden in it, and whether it was a priceless treasure!

The lights came on, and this dark secret passage ushered in light for the first time after more than 200 years of closure!

Ye Tian turned on the strong flashlight and shone into this dark passage that was inclined downward, and the situation in the dark passage was immediately revealed!

Everything was the same as he had seen before, there was nothing out of the ordinary, and the dark passages were very quiet and mysterious.

After a general glance at the situation in the dark tunnel, Ye Tian handed the strong flashlight in his hand to Anderson and asked Anderson to hold the light.

He himself took the air detector placed next to him, hung it into the dark tunnel, and began to test the air quality in the dark tunnel to see if there was any danger!

The test results came out quickly, except for a slightly higher humidity, the air quality in the dark tunnel was not much different from the outside world, and there were no toxic gases.

This is undoubtedly good news, wearing a gas mask doesn't feel much better, and it's best not to wear it.

Ye Tian looked at the air test results again, and after confirming that the air quality in the dark tunnel was good and there was no danger, he immediately took off his gas mask and put it on the floor next to him.

Seeing his movements, Anderson did the same, took off his gas mask and put it aside, and let out a sigh of relief.

As soon as he took off his gas mask, the guy couldn't wait to say:

"It seems that the air in the dark tunnel is not bad, this is really good news, it doesn't feel good to wear a gas mask, especially not being able to speak, it's too uncomfortable!"

Ye Tian nodded lightly, and then continued:

"Obviously, this tunnel and the secret room below were built with a ventilation system, so the air quality is so good, almost indistinguishable from the outside world.

As far as I can deduce, the ventilation system of this secret passage and the secret room below is probably connected to the ventilation system of Notre Dame Cathedral next to it, or to the Seine River not far away!"

"I think it's the same, the building is very close to Notre Dame Cathedral, and it used to be an annex to Notre Dame Cathedral, so it's normal to share a ventilation system.

And it is only one or two hundred meters away from the Seine, and the ventilation system is also very reasonable to connect to the Seine, and there may be a secret passage directly to the Seine River as an escape route!

Shall we enter this secret passage and the underground secret room? I'm really looking forward to seeing what's going on in that secret room and seeing what treasures are hidden there!"

Anderson said excitedly, eager to try it, and he couldn't wait to step into the secret room and discover the treasure.

Ye Tian shook his head lightly, and said with a solemn face:

"Don't worry, Anderson, the specifications of this secret passage and underground secret room are very high, and it must have taken a lot of thought and cost to build it in the first place, so we must not enter it rashly!

Nine times out of ten, there are traps or traps in secret passages and basements like this to prevent enemies, treasure hunters, or others from breaking into the tunnels and secret rooms.

Therefore, we must be cautious and never break in until we find out the situation, which is undoubtedly a joke with our own lives, which is a very stupid act."

Hearing this, Anderson immediately shuddered, and even took half a step back, lest a bullet or crossbow arrow suddenly shoot out of the dark passage, and take his own life, then he would lose a lot of money!

Looking at his actions, Ye Tian couldn't help but laugh softly.

"There is a beetle drone in that handbag, let's use the beetle drone to explore first, this is the safest, even if there are traps in the secret passage and secret room, it is impossible to do anything with the beetle drone!

After using the beetle drone to find out the general situation of the secret passage and the secret room, and basically determine the safety, let's enter the secret passage again, grope forward little by little, and completely uncover the secrets hidden in the depths of the underground!"

After speaking, Ye Tian walked out of the dirt pit where he was, came to the handbag in the center of the basement again, took out the beetle drone and control equipment from it, and then returned to the entrance of the dark passage!

Soon, the small beetle drone flew into the dark passage, flew straight down the steps of the dark passage, and began to carry out the exploration mission.

The infrared camera it carried immediately fed back the situation in the dark tunnel and displayed it on the control device in Ye Tian's hand.

In just a dozen seconds, the beetle drone flew through the curved curve and entered another road connected to it.

It was a road about five or six meters long, sloping downward, about two meters high and one meter wide and two or three meters wide, and at the end of the road was a wall, hidden in the darkness.

Almost at the same time as the beetle drone entered the corridor, Ye Tian's face suddenly changed, and he directly exclaimed.

"I'll go! That's an exaggeration, it's a big deal!"