The Jin family dug a slender flotting trough on the roof of this floor, and the two sides of the trough and the entire wall were coated with phosphorus powder, and the flint stone was inlaid in the trough, as long as it rubbed the phosphorus powder in the trough slightly, the whole floor would fall into a sea of fire, and the gunpowder buried under the oil would also explode.

This is an extremely dangerous mechanism that, if triggered, will blow up the two nearby stilted buildings.

The stone slab that Lin'er found on the west wall was where the fire oil array was located.

I carefully studied the keyhole in the stone slab, the keyhole was the size of a fist, at first I thought it would need a specific key to open, but then when I put the light in, I found that inside the keyhole was a very deep metal cylinder, and the passage was filled with a large number of anchors, which were arranged on top of each other like shark teeth, and the number of anchors was incalculable.

At the bottom of the metal cylinder, there is a shuttle needle with a cross-sectional diameter of about seven centimeters, the needle tail should be fixed with something, the whole needle is suspended in mid-air, can not touch the surrounding anchors, but the distance between it and the anchor is very close, at least slightly deflected, can be pressed on the anchor.

I probably guessed how this mechanism should be broken, but I still hesitated in my heart, if I want to crack the oil array, I must pull out the shuttle needle in the keyhole, and I am afraid that the shuttle needle will touch those anchors in the process of moving, then we will be finished.

It's a delicate job, I can't do it alone, I have to have someone around to help me shine the light.

I discussed it with Bai Laogou, and Bai Laogou took the initiative to ask to stay and help me, but after thinking about it, I decided to let He Wenqin stay, among all of them, he and I have the best light body kung fu, in case something goes wrong, the two of us still have the possibility of escaping, but if Bai Laogou stays, to be honest, I am not sure that I can protect him.

When Bai Laogou led the others upstairs, he told me to be careful, and if I really couldn't do it, I would give up.

I could hear from Bai Laogou's words that this time he was really afraid that something would happen to me, and he was quite moved in his heart.

When the white old dog and they retreated, He Wenqin and I started to do it, He Wenqin lit the keyhole, I will untie the gossip money, throw the yang line into the keyhole, and then shake the wrist a few times, so that the yang wire is firmly entangled in the shuttle hole near the needle.

He Wenqin probably had never seen such meticulous wrist kung fu as three hanging money, and praised me: "Good craftsmanship!" ”

I took a deep breath, slowly turned my wrist, and slowly pulled the shuttle needle outward by leaning on the yang line, and as soon as the shuttle needle moved, I heard a "snort" noise from the roof behind me, and I trembled in my heart and quickly stopped the movements in my hand.

But at this time, I didn't dare to let go, let alone look back, so I could only ask He Wenqin: "What's the situation?" ”

He Wenqin turned around and shone the light, and quickly responded: "The flint on the roof has moved!" ”

"How?"

"Slid a little to the left, and there was a hole to the left of the trough, and the flint was shrinking into the hole."

I understood that as long as the shuttle needle was drawn, the flint would leave the stone trough, and that thing was equivalent to the lead of the oil array, as long as it was gone, no matter if the oil was everywhere, it would not be ignited.

Now I am most worried that the flint will rub against the phosphorus powder on the tank wall during the process of moving, but He Wenqin said that the flint moves straight and does not touch the phosphorus powder for the time being.

When I pulled out the shuttle needle just now, I also let the needle move straight, and it is estimated that as long as the needle body is off, the flint will also be deflected when it moves.

Now I have a general understanding of the mechanism structure of the fire oil array, but sometimes, the more clear you are about the current situation, the easier it is to get nervous.

Next, in the process of moving the shuttle needle, there seems to be an invisible pressure on my heart, and cold sweat flows down my forehead, sometimes the sweat falls in the eye sockets, and I dare not pierce my eyes, and I have to endure the discomfort to maintain the stability of the shuttle needle.

He Wenqin took a handkerchief to wipe my sweat, and I found that his palms and backs were also full of sweat, and most of the handkerchief was soaked with sweat from his hands.

When part of the shuttle needle is drilled out of the barrel, I hold the needle in my hand and step back as evenly as possible.

The needle was more than a meter long, and I took three steps back to pull it out entirely. When I took the last step, probably because of a moment of excitement, my hand was not as steady as before, and the shuttle needle suddenly tilted, and the needle tail hit the edge of the cylinder strongly.

Listening to the muffled sound of "clang", my heart was almost in my throat, and He Wenqin also hurriedly lit the roof, which was really fortunate, at this time the flint had completely retracted into the hole on the left side of the trough.

I carefully placed the shuttle needle on the ground, and then all the turbid air in my chest gushed out, and I immediately began to gasp for breath.

When I moved the shuttle needle just now, I was afraid that the excessive breath would affect the stability of my hand, and I was holding my breath a lot of the time.

He Wenqin also gasped violently, and gave me a thumbs up while panting: "Look at your young age, your means are more powerful than the Jin family." It's good to have you, otherwise I'm afraid no one will be able to break these mechanisms left by the old Jin family. ”

I said, "I don't dare to compare with the people of the Lao Jin family, these mechanisms they designed, to be honest, even if I draw a scoop according to the gourd, I may not be able to arrange them." ”

Bai Laogou probably heard the conversation between me and He Wenqin, so he poked his head out of the staircase and asked, "It's done?" ”

He Wenqin raised his head and responded: "It's done." This little brother you brought is really powerful, the technique is too stable, even if it is a thief, I am afraid that there is no such good technique. ”

The white old dog was stunned for a moment, and then spit out a word sullenly: "Hmph!" His reaction was expected by me, and I smiled helplessly, but didn't say much.

After a short rest, I beckoned everyone to walk through the oil formation together.

If the flint hadn't been removed in advance, it was estimated that as long as the soles of the feet touched the dark lines under the oil, the entire floor would be ignited in an instant.

I don't understand the old Jin family's style more and more, setting up such an organ in the place where I live, in case of an accident, a family of 100 people will not survive. What are they hiding in the depths of the old mansion to guard against outsiders in such an extreme way?

As we walked down the stairs under the east wall towards the third floor, we found a row of shiny footprints on the stairs.

These footprints should have been left by the person we saw earlier, and the reason why the prints were shiny was because the soles of his feet were stained with a lot of grease when he passed through the fire oil array. This man has no shoes, the soles of his feet are wide, and most people have only five toes, but from these footprints, the other person has six toes, and two are big toes and two are side by side.

He Wenqin squatted down, looked at one of the footprints repeatedly, and suddenly said: "It's from our old He family." ”

Bai Laogou immediately asked him, "How do you know who the family is?" ”

"Our old He family can crisscross the world with light body kung fu, because the soles of the feet of every He family are different from ordinary people."

As he spoke, He Wenqin also raised his foot to show us, the soles of his feet were also very wide, and the position of the toe near the thumb was widened.

Bai Laogou said: "In addition to you and He Jiayun, does Lao He have other descendants?" ”

"I can't figure it out either, it is said that there should be no one else in the family except me and Jiayun," He Wenqin responded: "Except for Jiayun who is not by my side, the rest of the clansmen are all buried under my auspices." But the guy I saw just now...... I always thought he was very familiar, but for a while I couldn't remember where I had seen him. ”

Lao Ruan interjected on the side: "It can't be your father, right?" ”

He Wenqin shook his head: "Impossible, if my father really lived until now, he would not be in his nineties, and the hair of that person just now was not white, at most he was in his early fifties." Besides, when my father died, although I was still young, I always kept his picture at home, how could I not recognize him. ”

While they were talking, I lit a cigarette and took two hastily puffs, trying to calm the mess a little quieter.

After He Wenqin and Bai Laogou said a few words, they collectively fell silent, and I finished smoking most of my cigarettes before carefully extinguishing the cigarette butts and beckoning everyone to continue deeper.

When we went down the stairs, the footprints on the ground were still there, and we followed the direction of the footprints to shine, and we saw that there were three earthen walls directly opposite the staircase, each wall was at least half a meter wide, and the walls looked straight at first glance, but if we looked closely, we would find that they were slightly inclined by a small margin.

Lighting along the gap in the middle of the earthen wall, you can see that there are large sections of walls in the distance, some of the walls are connected by the ends, and in other places, there is a gap in front of the two walls, just enough for one person to walk through.

Wood, fire, earth, metal, and water, after the two formations of wood and fire, this array must be the earth array.

There is only one structure of the earth formation in the mechanism technique, which is the mire maze, that is, some deadly mire is set up in the normal maze, and if you step on it wrong, it will be a catastrophe. However, this is on stilts, no matter how powerful the Jin family is, it is impossible to make a swamp in this kind of place.

Since it's a maze, it's easy to do, just follow the footprints on the ground, and you'll definitely be able to get out.

Unfortunately, I thought too simply, as soon as I walked in front of one of the earthen walls, the sound of gears turning could be heard from deep within the floor, and a series of dense friction sounds could be heard, as if something heavy was moving on the ground.

The old white dog asked me what kind of movement this was, and I thought about it before telling him that this should be a moving maze, and you must follow certain rules to get out, and if you don't understand the moving rules of the maze, you will be trapped in it.

Hearing me say this, Bai Laogou was a little irritable: "Do you want to say, you can't figure out the rules here." ”

I smiled at him: "Don't bother, let's tear down the wall." ”

Bai Laogou stared at the three earthen walls in front of him, and couldn't help frowning: "Such a thick earthen wall, when will it have to be demolished!" ”

I walked up to an earthen wall, lunged solidly, and threw a straight punch in the backhand, and as soon as the vibration of the fist touched the wall, with a series of muffled sounds, the earthen wall collapsed into a hole more than a meter wide.

Bai Laogou pouted: "I almost forgot, your master is the second child." ”

Thanks to the fact that these walls are rammed with hard earth, it would take a lot of effort to tear them down if they were half-meter-thick stone walls.