When they saw the key, everyone's first thought was that it must be the key to one of their hiding places.
A hint of joy appeared on Lu Yuan's face as he reached out and took the key.
"Haha, heaven rewards those who persevere, we've finally found some clues. Now that we have a key, if we find the lock, we can find even more secret information."
Everyone nodded in agreement, and then Lu Yuan immediately issued a search order, continuing the search along the underground chamber towards Situ.
This search was more extensive and thorough, even covering walls, ceilings, and floors.
Who knows if they considered the possibility of this place being discovered when they built this secret room, so they created a secret room within a secret room.
Before long, the ground had been completely searched and cleaned.
No clues were found in the room either; now their focus was on the telephone board and the walls.
After a long and arduous search, Lu Yuan finally found a clue behind a brick in the wall.
Lu Yuan noticed that the wall tile in the distance looked slightly different in color from the others. He immediately realized something was wrong and walked over to it, gently pressing the tile.
The wall tiles didn't react at all, but Lu Yuan could feel a different texture on them.
"This isn't an ordinary brick; it's made of iron, and it must be a mechanism."
The attendant quickly took out the detection equipment and began searching the wall. When the equipment was turned on, the probe was only slightly touched to the wall when it immediately detected a large amount of metal behind the wall.
"Hahaha, we found it! We found it!"
Lu Yuan was extremely excited. He immediately sent people to search the wall. First, they removed all the other bricks, revealing a whole bulletproof steel plate.
A smile appeared on Lu Yuan's face when he saw the large piece placed on the steel plate.
"The rest is simple. The lock should be behind this brick. Let's try to open this brick first."
An assistant immediately brought over some tools, analyzed the brick, and then took out pliers and gently twisted it, causing the cover plate to fall off and revealing a round keyhole.
Lu Yuan gently inserted the key into the lock and turned it twice. With a click, the wall began to shake.
Everyone took a step back, and then the door creaked as if it were running out of oil.
After twisting a few times, the door slowly opened, revealing a path through the gap in the middle of the door. As the gap widened, the path became more and more spacious.
After they had fully opened up, they saw a step.
"As expected, there really is a whole world inside. Luckily, we didn't leave so soon."
Then Lu Yuan immediately had his men put on their equipment and take turns operating it as they went down the steps.
The further down you go, the more the smell becomes indescribable.
After turning a few more corners, Lu Yuan finally caught a whiff of the stench, which smelled like the stench of a rotting corpse.
"Damn it, could there be a dead person in here?"
The people around them all nodded in agreement.
"It looks like the corpses have been sitting for a long time, otherwise they wouldn't smell so strongly. We should still be careful, there are probably floating buns in the air, inhaling them could easily lead to fungal infections."
Everyone quickly grabbed their portable filter masks, put them on, and continued walking forward.
After passing two corners, a large, secret room appeared below, containing some communication equipment.
These communication devices reminded Lu Yuan of the hand-cranked walkie-talkies that teachers used decades ago when people were fighting.
Everyone was slightly taken aback when they saw these things, and some of the younger people didn't even know what they were.
Lu Yuan casually picked up a hand-cranked telephone from the table and was shocked to find that there was a wire on it.
"What era is this? There are still phones like this. It's outrageous!"
The others nodded in agreement.
"That's right, my parents probably used this kind of phone when they were kids."
"That's right, these old-fashioned telephones have been obsolete for ages, yet they're still using them."
"Could it be that these people's civilization has suffered a break and they can only invent things themselves?"
Upon hearing what the other person said, Lu Yuan realized that the old-fashioned telephone in his hand looked very new, as if it had just been manufactured not long ago.
"Could the wiring of this telephone be a contact point leading to another location? If that's the case, then if we follow the wiring, we should be able to find their other contact point."
So everyone searched the room again, and after confirming that there was no valuable information, they began to follow the clues to find the next contact point.
The line was buried very deep, extending from the ground all the way to the surface. After layers of authorization, they finally managed to dig it out. About half a meter below the shallow layer of soil on the ground, there was a thin line.
These lines followed the ground, winding around tree roots for a very long distance. It took Lu Yuan and his group about a day to reach the end.
However, Lu Yuan wasn't bothered at all; on the contrary, he found the method to be very interesting.
This chapter is not finished, please click the next page to continue reading!
Continue read on readnovelmtl.com
