When the words fell, the atmosphere next to the fire instantly became subtle, Hao Jian and Hu Tu and I glanced at each other, with the same embarrassing expression on our faces, we studied here for most of the day, and no one saw such an obvious thing!

After a short silence, Hu Tu was the first to come back to his senses, pretending to be serious and nodded: "This guess is indeed somewhat possible, it's okay to be idle left and right, let's check it first, right?" ”

"Yes, you can."

Hao Jian and I nodded in agreement, and then the four of us divided into two groups, Hao Jian and I were responsible for inspecting the inside of the cave, while Hu Tu and Liu Yunsheng were responsible for the outside.

Said to be an inspection, in fact, it is to look around, after all, we don't even know what we are looking for, we can only study the places that look more abnormal first, the cave is so big in total, and after a while, Hao Jian and I are almost around, and we went out to see the situation of the other team, and we saw Hu Tu and Liu Yunsheng taking a personal ladder and studying a stone above the entrance of the cave.

By the light of the torch in Liu Yunsheng's hand, I saw that it was a stone about three or four inches protruding from the stone wall, if it was just like this, of course, it was not unusual, the problem was that the stone was boxy, and there was a neat groove in the middle, although the surface was also wrapped with calcium carbonate precipitate, but looking at this shape, I knew that it was definitely not naturally formed.

Liu Yunsheng was holding a torch to observe the inside of the groove, I couldn't see anything underneath, so I was anxious and asked casually, "How is it?" Did you find anything? ”

"Sort of," Liu Yunsheng replied ambiguously, "This thing should be a keyhole, but we don't know where the key is." ”

"Could it be nearby?"

I lowered my head and looked around, there were only some small irregularly shaped gravel blocks on the flat ground, Hao Jian also saw it, squatted down and put the gravel together and tried to put it together, I only glanced at it and didn't pay attention to it anymore, because the gravel knew at a glance that it was falling off the stone wall, and even if this was really the so-called key, it would definitely not be able to be used anymore.

Sure enough, after a while, Hao Jian threw away the stone and chose to give up, and at this moment, Liu Yunsheng on top said, "Huh? As if I had found something, I looked up and saw that he had put his hand into the hollow, and his whole arm had gone into two-thirds of the way! You must know that the stone protrudes only about three or four inches from the stone wall, and he directly inserted his hand into the stone wall this time!

Before I could react, Liu Yunsheng pulled out his hand again, looked down at us and said, "There is a push-pull bracket inside, and the depth is unknown." ”

"Why don't you give it a try?" I suggested, Liu Yunsheng lowered his head and thought for a while before saying, "I'm afraid that something will happen after opening it, so you should stay away first." ”

"Understood!" Hao Jian and I nodded at the same time, and retreated to five or six meters away in a few big steps, Hu Tu glanced back and scolded: "You guys are too sorry for your lives!" If something happens, I'm the most dangerous, okay! You can't even run with this look! ”

"You get out of the way, too." Liu Yunsheng snorted, threw away the torch and grabbed the protruding stone with one hand, and hung his whole body on the vertical stone wall as soon as he shrunk.

Seeing this, Hu Tu hurriedly retreated and stood with us, and then Liu Yunsheng put his other hand into the stone trough and began to push the machine, this scene suddenly reminded me of the black box challenge, in this kind of place to stretch out your hand to an unknown place, you really can't do it without a little guts, I don't know how much strength it takes, but I see that the muscles of his whole body are trembling slightly, I know that he must have used all his strength!

Without worries, Liu Yunsheng obviously accelerated his movements, and in the blink of an eye, his entire arm was completely submerged in the stone trough, and almost at the same time, there was a "click" sound inside the stone wall, and when I approached me, I saw Liu Yunsheng's whole body shake and suddenly withdraw his hand and fall down!

"Lao Liu!" I exclaimed, and rushed over directly regardless of the danger, Liu Yunsheng lay on the ground with a pale face, and said something in a very low voice, and then passed out with his eyes rolled over!

"What's wrong? What's the situation? Hao Jian and Hu Tu also rushed over to ask, and I was about to shake my head and say I didn't know, when I saw a thin red line slowly appear on Liu Yunsheng's arm, followed by a second and third ...... In a few seconds, more than a dozen wounds were wrapped around his arm, scarlet blood oozed out, and I was suddenly stunned with a "buzzing" sound in my head!

Hu Tu was yelling beside him, but I couldn't hear a word at all, and I watched him bandage Liu Yunsheng's wounds in a daze, and then let Hao Jian drag me away like a marionette.

By the time I came back to my senses, I was already sitting in the cave, Liu Yunsheng was lying by the fire, his face was as white as paper, the wound on his arm had been bandaged, and more than a dozen layers of bandages had wrapped him like a mummy.

"How is he?" I looked at Liu Yunsheng in a daze and asked, my voice was hoarse as if I hadn't drunk water for half a year, and even I was startled.

"It's a problem at the moment, but he's bleeding too much if he can't wake up...... No, he's going to wake up, and he'll be fine when he's awakened and rested a little longer. Hu Tu replied softly with a solemn expression, and then came over and patted me on the shoulder: "Don't blame yourself too much, although it was your proposal, it was also his decision after thinking." ”

I didn't know what to say, so I could only nod mechanically, Hu Tu took out a piece of jerky, tore it into strips, put it in his mouth and chewed it while saying: "What I just now should be some kind of defense mechanism, if you want to open the mechanism without a key, it will be activated, and thanks to his quick reaction to pull out his hand, I am afraid that that arm will be crushed if I replace others." ”

"So you're still looking for the key?" I understood Hutu's words and asked rhetorically.

Hu Tu nodded with shredded meat in his mouth: "But we don't even know what the key is, I'm afraid it's hard to find it." ”

"Huh! I have a note! Hao Jian suddenly slapped his head, pulled out a wooden stick from the fire and said, "We can find a long enough wooden stick to replace it, anyway, this thing doesn't know how painful it is, just grind it!" ”

Hu Tu tilted his head to look at Hao Jian, the expression on his face was like looking at an idiot, and he paused before saying patiently: "Maybe I didn't make it clear just now, if we don't have the key, even if you push the mechanism to the bottom, the door won't open, so there's no point in grinding a few wooden sticks." ”

"I see? That's a bit tricky. ”

Hao Jian nodded suddenly, daring to love that he really didn't understand just now, I pinched my eyebrows and was no longer able to complain, and now I didn't open the mechanism and let Liu Yunsheng be seriously injured and unconscious, this is really a loss for Mrs. and a soldier!