When Mo followed the ladder to the cave, he didn't notice that there was a red probe watching him nearby. Now, of course, his attention was focused on where else would be noticed in this cramped cave.

The part of the cave near the ground is made up of rock walls, but after a little further down the ladder, the rock walls are replaced by alloy walls. Mo Beitian continued to climb down, and every once in a while a large air flow would blow up from the bottom of the cave, and this air flow would hit the alloy wall and send a metal-specific echo.

Mo deduced that this long cave should be a vent, and there must be a large space connected to its bottom.

Sure enough, when Mo Zhitian's feet touched the ground, he noticed a row of alloy fences on the right side of the bottom of this vent. Due to the small space, Mo Yitian could only curl up and slowly rub to the fence, took out his saber to pry the fence open, and then carefully put the fence that he had pried off, he first poked his head out of the fence mouth, wanting to see what was on the other side of the fence, but it was too dark inside to see anything clearly. Mo Beitian stretched out his hand again and touched it up and down, and he found that his hand couldn't hook the ground at all, that is, there should still be some distance from the fence mouth to the ground on the other side. At this time, he rang and there was a portable flashlight in his backpack. This kind of flashlight is relatively small and easy to carry, but it is not very bright, and can only shine in a limited range. However, it should be enough to judge how high this place is above the ground. Thinking of this, Mo Bantian took out his flashlight and shone it down, and he could vaguely see how high it was about two people above the ground. Mo Bantian thought in his heart: It seems that there is no need for ropes or anything like that, just jump directly. So, he put everything in order and jumped down the fence, which was only the size of a dog's hole.

As soon as he got to the bottom, Mo Beitian felt a chill, as if this was a big freezer. And it seemed to be very empty, and he could feel the echo when he exhaled himself. From this, it can be concluded that there is a lot of space here. It is strange to think that graphite is a very stable substance and has the properties of resistance to high temperatures, and it is because of this property that it is used in many areas of industry. If it's a place to store graphite, shouldn't it need refrigeration? It seems that this is not a graphite mine, so what is this place?

Mo Beitian took out a flashlight again and wanted to use it to illuminate, but the irradiation range of this flashlight was too small, and when he looked forward, he could only see some bottles and cans in front of him. Mo Beitian shone the flashlight on the wall again, and there was a big English letter on the wall: "I". Underneath this letter there is a device that resembles a handbrake. Mo Yantian judged that this device might be the switch of the electric switch, so he walked over and pushed the hand gate up. In an instant, the entire space is illuminated.

It's really big, the size of a football field. Mo Feitian thought that this place seemed to be a hall, and the three sides of the hall were closed, except for a door a hundred steps ahead, the kind of electronic door that opened left and right when the door was open. There is also a big "I" on it. The hall is surrounded by silver walls made of calcium silicate board thickened material and alloy, which are so well insulated that even if there is an explosion here, nothing unusual can be heard from the outside. It is clear that such acoustic panels were used for the sake of secrecy. The bottles and jars that Mo Yitian had just shone with his flashlight were glassware, which were neatly arranged on a trolley in the corner of the hall. Mo Beitian walked over and picked up one of the flasks and looked at it, which contained a dark purple liquid that he had never seen before. He shook the flask with his hand again, and the liquid seemed viscous and did not heaval with the shake of the flask. Maybe it's because it's been left for too long to solidify, so I can't help but put down the liquid like blueberry pudding.

He walked on his own, to the electronic door. The electronic gate seems to be broken, and the retinal recognition system on the left side of the door is covered with cobwebs. Mo Bangtian broke it both sides with his hand, but the electronic door did not move, and it seemed that no tool could open this door. Just when he was in a dilemma, Mo Butian inadvertently turned around and found that the steel beam of the abandoned trolley was just right for a crowbar. He hurriedly ran back, put the shiyan utensils on the ground, and then removed the screws connecting the beams by hand, and then removed the beams.

Mo Beitian took the beam and folded it back to the door, inserted it into the crack of the door, and then used all his strength to push to the side, and finally he pried open a crack in the electronic door, which was enough for one person to pass through. Mo put down the crowbar and squeezed in through the crack in the door.

The inside of the door was as dark as the hall, and Mo Yitian groped around the wall with his hand for a while to find the same hand gate as the outside. He pushed the hand gate shut, and the scene in the door was immediately in full view.

The sight inside the door startled Mo Beitian, the space inside the door was several times larger than the hall outside. There were many things on display that I had never seen before—glass jars that were more than one person high! Each jar is printed with a large "I", and the top of the jar is connected to many pipes, and on the other side of the pipe is an instrument that I have never seen before. At a cursory glance, there were at least a thousand of them, and they were placed in the center of the room, larger than the hall, as neat and solemn as an army ready to go.

This is not a graphite mine, but a laboratory-like place! A word flashed through Mo Beitian's mind at this time: "

InitialLaboratory”！ The first lab! That's right, aren't those big "I's" exactly its abbreviations? But what is being done here is probably beyond the scope of the experiment. Looking at the scale of these jars, it should be called here: Shiyan field is about the same. Speaking of shiyan, what kind of shiyan is exactly? The button Paul handed me is obviously related to graphite, why is it connected here? Could it be that I misunderstood? Or maybe you didn't understand it wrong but went to the wrong place, maybe there was really a graphite mine nearby, but you didn't find it. Probably not, the location of the graphite mine in the upper reaches of the Blood River must be here, but this place has nothing to do with graphite at all!

Mo Bantian sorted out his thoughts, he thought that his thoughts should not be wrong, and Paul's place to come by himself must be here. Graphite is an indirect implication that finding himself in this laboratory is Paul's real purpose. Didn't that button have the words "First Laboratory" written on it? It seems that the answer to this first puzzle is here. All I have to do now is to look around, and there will definitely be new discoveries.