Chen Zhijun asked Zhang Gong suspiciously: "Uncle, what is this serial flap mechanism like?" How to crack it? ”

"Haha, Chen Gongzi is very studious now, this mechanism is actually like a balance scale, the top of the mechanism is a few stone slabs or other cladding, these plates are installed on a shaft, originally balanced under the action of counterweights, if suddenly someone steps on it, it will cause an imbalance to fall below, the bottom is generally a pit several meters deep, all are vertical sharp weapons, as long as the tomb robber falls into it, he will not die at that time will also die because of blood loss trapped in it, it is easy to do after knowing the principle, The easiest way to do this is to lay the corridor with long boards. ”

"And the tomb robbers are also covered with plates?"

"Tomb robbers don't take heavy wooden planks, they mainly use wooden ladders, etc., which are light and convenient."

Professor Chen heard that Zhang Gong was preparing for endless light talking and not working, so he walked up to him and said, "You better work early, otherwise you won't touch the wine at night." ”

Wine is the driving force, and immediately Zhang Gong went to get the guy who came to explore the ground to carefully probe the Yongdao, and in the slowness Zhang Gong suddenly shouted excitedly: "Lao Chen, come on, new discovery!" ”

Professor Chen walked up to Zhang Gong unhurriedly and asked, "Why are you startled again?" ”

"There's a small space down here, and it's supposed to be the trigger part of the stone statue."

"How old is it?"

"It's less than 3 meters deep and about 1.9 meters wide."

"Oh, then open these stone slabs, and remove the mechanism on this stone statue before moving forward."

Zhang Gong didn't stop probing, and after continuing to move forward, after drawing a mark on the wall, he returned to the underworld hall and picked up a small shovel to dig up the underground space that he had just detected, and after cleaning the soil in the cracks of the stone slabs, with the help of Chen Zhijun, he successfully lifted the stone slabs.

After dismantling the stone slab, Chen Zhijun asked: "Uncle, the trigger part of this mechanism is right below here, so how did these two stone doors go up?" ”

Zhang Gong continued to do the work in his hands and replied without looking back: "This stone door mechanism is different from the outside, this is basically no longer ready to open after being put down, so there is no counterweight, if it needs to be opened again, it will take manpower to lift, don't you look at both sides of the stone door, there are hanging ears on both sides, and it should be pulled up with a rope or something when lifting." ”

"Oh, so there's a hanging point on it too?"

"It must be, otherwise no one can carry this stone gate directly."

After listening to Zhang Gong's words, Chen Zhijun shone a flashlight on the top of the stone gate, and sure enough, he found that there were round holes on the corresponding mountains on both sides of the door, and they looked smooth.

"Uncle, did the ancients just pull the door up like this?"

"Almost, look at the simple lifting platform outside, indicating that there may also be pulley block technology in that era, it should not be completely raw and hard, do you look for a hole in the distance, if there is one, see if it may be used for fixed winches and other purposes."

"Oh, it should be within this straight-line distance, right?"

"Almost, if you can't find it, it means that you rely on manpower; Go, get an improvised ladder, and I'll take a look down there. ”

As the lights moved forward again, the front of the corridor and the parts of the stone slabs that had just been removed under the feet were already clear. Two red coffins could already be seen in the main burial chamber in front, and the newly discovered space under his feet was full of counterweights and levers.

A total of 11 levers lead from the front of the stone statue to this hole, 9 of which are connected to the front of the Nine Palaces under the stone slab, each with a corresponding counterweight, to ensure that the stones on the Nine Palaces do not fall directly to the base; Only 3 of the 9 are attached to a hollow log held to the stone wall by copper bars, with 3 grooves and 3 levers piercing directly into the middle, with a stone counterweight on one side of the log. Zhang Gong looked at it and exclaimed: "Perfect combination lock!" ”

"Uncle, isn't this just a simple mortise and tenon structure of wood, how did you realize the password? What happens if the order is not right? ”

"Zhijun, you see, the middle of this log is hollow, the three levers in this is actually the role of a paddle, inside this log, you look carefully, there is a dark tenon, only in accordance with the order of the three can the original inside a top of the dark tenon to push out, and the modern lock cylinder meaning is similar, all out of the dark tenon, see this small counterweight, it will move the middle part to the side, but also let this end of the wooden bar fall, this should be the stone statue belly of the mechanism insurance, With the correct entry of the password, the safety is opened, and the small wooden bar at the other end is against the fulcrum under the stone door, and the thickest lever, which is the lever under the last stone you prompted, is just on top of it, and the fulcrum will be pulled out with a little force. ”

"I understand, in fact, this is relatively simple now, but the ancient invention of this, it is really a miracle! By the way, uncle, how can this mechanism be dismantled now? ”

"The nine-palace diagram is to be dismantled, whether it is to study the value of the use and origin of the password lock in ancient times, the nine-palace diagram itself is a big knowledge, combined with the stone door in front, this is a cultural treasure! The mechanism in the stomach of the stone statue is not dismantled, the old rule, let the crossbow be fired all. ”

"How do you shoot it?"

"Stupid! Do you know which one is the insurance function, and ask this mentally handicapped question? ”

"You mean lift that wooden slab and then press down the big lever?"

"Correct! Go, get some more planks to pick up arrows and hack the chain flip trap. ”

After Ma Kai took a photo of the mechanism below, Feng Weiguo asked Zhang Gong: "Zhang Gong, this looks quite simple, but what is the design of the dark tenon inside?" ”

Zhang Gong climbed up from below and drank a sip of water and said: "If you are interested in listening, today Mr. Zhang will tell the students about the composition of the password lock in the mechanism, and the opportunity must not be lost and will not come again!" ”

Under his voice summoned, the people who were originally surrounding him shrunk the encirclement even smaller, looking at the hungry expression, a pair of flashing eyes, Zhang Gong drew a sketch on the ground, and then said to everyone: "In fact, the principle of this lock is very simple, that is, let the dark tenon inside change the position in turn, so that the lock cylinder in the middle can pass smoothly, the lock cylinder of this mechanism is actually the middle part of the log below, and there is also a groove in the middle, that is, the Mao in the carpentry, when locked, That is, the tenon in this is stuck in this joint, and its counterweight at this end cannot work, only when the dark tenon is moved in turn, the lock cylinder in the middle will move to the open position under the action of the counterweight. Since it is said to be a mechanism, it will not be a simple lock, the nine-palace diagram mechanism in front of you, when the lock is not opened, there is also a lever on the lock cylinder on this side, this is the trigger of the crossbow, when it does not fall, as long as you stand on the last stone, after stepping on the stone, the mechanism will be triggered, do you still want to hear it? Predict what will happen next, please listen to the next breakdown! ”

Seeing everyone's fascinated expressions, speaking of which, Lao Zhang sold Guanzi.

"Don't, Zhang Gong, it's the most critical time, go on, don't stop!"