Ai Qingying was very proud, and she didn't hide it: "Come to the wild, just rely on you nerds?" Isn't it just two flashbangs, what's so strange, I have others, do you want to take a look? As he spoke, he patted himself on the ribs and asked everyone mysteriously, "Guess if there is a desert eagle here?" ”

When he spoke, his eyes were always staring at Cao Ye, very intimidating, obviously taking revenge on Cao Ye's verbal hostility just now, seeing that the other party was no longer speechless, Ai Qingying laughed with considerable satisfaction.

I couldn't figure out whether it was true or not, so I got closer to Cao Ye and asked him in a low voice if there was really a flashbang? - I myself was facing the cave wall, and I just saw a burst of white light. Cao Ye nodded at me with a complicated expression, which was considered acquiescence, but it seemed that he didn't want to say anything more at this time.

I also felt a chill in my heart, and suddenly realized that this Ai Qingying is not only a rich second generation, but also a foreigner who has nothing to do, and I really have to consider staying away from him, leaving after doing it, and never entangled.

And Cao Ye knew that he had lost face, and he didn't want to dwell on this problem, so he began to look forward and backward distractedly, waving his flashlight and sweeping around in the empty darkness around him, aimlessly, but gradually, his flashlight began to fix at a point and no longer moved.

Suddenly, he stood still and shouted, "Stop, everyone. ”

Everyone didn't know what was going on, so they stopped abruptly and looked at him with puzzled expressions. The pale flashlight flashed from time to time, Cao Ye looked serious, and when he saw everyone looking at him, he said word by word: "We don't seem to be moving!" ”

"What do you mean?" Everyone didn't understand it at once, you look at me, I look at you, they don't quite understand what Cao Ye meant.

Seeing everyone's headless fly-like appearance, Cao Ye put the flashlight under his armpit, clapped his hands, and explained to everyone: "I mean we don't seem to be moving forward. ”

"Fart." Liang San relied on Ai Qingying's arrogance, and became more and more unkind to Cao Ye, and now he directly reprimanded: "Lao Tzu's feet are almost worn out, you Gua Wazi said that we didn't move?" Saying that, he raised his hairy bare legs to show the soles of his feet to everyone, when he ran away just now, he didn't think that the shoes without laces were in the way, and he threw them aside, and now the soles of his feet have been ground by the rubble to the shocking ground, and the small wounds that have been cut abound, and the blood is still seeping non-stop, and the fine sand and gravel are stuck to the feet by the blood, and even a lot of them are squeezed into the wounds, and just like that, this rough man has no complaints and dissatisfaction, a bit of a tough guy.

Cao Ye looked at Liang San's feet, didn't care about his bad attitude just now, but took out a pair of disposable slippers commonly used in hotels from his bag, handed them to Liang San, and motioned for him to make do. Liang San was stunned, but he didn't shirk it, and put it on his feet and let out a long "whew", as if he was very comfortable.

Cao Ye then continued: "We have been walking along this ramp for half an hour, and we haven't bottomed out yet......

"It's nothing, maybe it's a long ramp." I said, and everyone thinks the same thing, and I don't think it's any strange.

"That's not right." Cao Ye came to his senses, clapped his hands habitually, and then gestured and said: "The slope of this ramp seems to be less than 20 degrees, and the slope ratio is about 30%. Speaking of this, he looked at everyone's expressions and explained: "That is, every time we walk 100 meters, the height drops about 30 meters. ”

Cao Ye paused again, and then started the class like a teacher teaching a student: "Note that this is the premise." Then, we don't go downhill too fast, about 3 kilometers per hour, half an hour is 1.5 kilometers, and we should go down 450 meters vertically......"

As soon as he said this, Liang San couldn't help it again, and muttered, "What does this mean?" What about arithmetic? Lao Tzu is a rough man, and he can't understand flowery things! Nerds talk all about going around and around. "Maybe it's because of a pair of shoes, but the attitude towards Cao Ye is not so bad.

Ai Qingying was also quite impatient, and said loudly: "Say the point, say the point." ”

Cao Ye found out to himself, and seeing that they were so disdainful, he stopped talking coldly. I thought to myself that this was not the time to be angry, so I pulled Cao Ye's sleeve, and then deliberately asked in a loud voice: "We understand what you said, but why do you say that we didn't move?" ”

Cao Ye raised his arm and pointed to the triangular light below the diagonal and said, "When we first entered here, the entrance of the cave was just below our diagonal, right?" Seeing that everyone nodded but was puzzled, he asked aloud: "But we have come to the present, the vertical descent height is nearly 500 meters, but the hole is still below our oblique, and the angle has not changed at all." ”

I vaguely understood what he meant, and asked, "Did we start looking down at the hole, and as we went down, we should gradually look at the hole?" ”

"Bingo, the position of that hole in our field of vision will change significantly." Cao Ye was very excited, and praised me while squatting on the ground to draw pictures, saying, "Brother Situ is still quick-minded." He gave me a thumbs up.

I was embarrassed, this Cao Ye boasted that his level was really not low, and the picture was also drawn very concisely and clearly - it is a right-angled triangle and a dot outside the triangle, the hypotenuse of the triangle represents the ramp we walked, and the dot represents the hole of the exposed light, he dotted two dots on the hypotenuse, and then connected the dots outside the triangle with two dotted lines, representing the angle of sight we see the dots, which is clear at a glance. But I still had some doubts, and pointed to the dot representing the entrance of the cave and asked, "Is it possible that the reason is the distance, we are far away from the hole, and even if we descend more, we can't tell that there is any change." It's like there is a song that says the moon goes and I go, and the moon sends me to the entrance of the village."

"It's possible." Cao Ye said confidently, "However, we must be far away from this cave entrance to achieve it, at least more than ten kilometers, can you imagine a giant cave with such a wide diameter?" ”

"Anything is possible." Ai Qingying took the words, and as usual, did not follow Cao Ye's train of thought, but put forward another idea, fortunately, it was not the supernatural metaphysics and ghosts that he had never forgotten. He erased the dot representing the entrance of the cave, and then drew a dot at the bottom of the diagonal triangle and said, "If the hole is at the end of this ramp, no matter how we walk, the angle of it will not change, you can't think of such a simple geometric concept?" So, it's useless to be a scholar, and it's quite self-righteous......"

Cao Ye raised his head, looked at Ai Qingying in disbelief, sighed, and looked very helpless, feeling that this question was simply not worth refuting: "Please, can you not oppose for the sake of opposition, you take a look, is that cave entrance and our road in a straight line?" ”

The fact is obviously on Cao Ye's side, and everyone can see that the light of the triangle is not at the end of the slope under our feet, but slightly above. But Ai Qingying still didn't care about this, waved her hand and said, "Then it's really possible to meet the ghost hitting the wall again, Liang San, do you still have urine?" ”

Fortunately, Liang San sneered, embarrassedly saying that he didn't have it, it was estimated that it was only a few drops of hard squeezing, I don't know if there was any effect, and he looked at the two little brothers who followed him with vicious eyes, and only saw two heads that kept shaking.

Ai Qingying began to rummage through the bag and said, "If you want to know what's going on, let's point out the highlights and see with our own eyes." ”

Liang San's flattering tree gave a thumbs up and said, "Mr. Ai still has a flashbang?" That thing works, or is Mr. Ai far-sighted. ”

When Ai Qingying heard the praise, she gave him a blank look, imitating Cao Ye's tone just now, and teasing: "Please, can you have a little brain, flash bomb, you can see a hair yourself, are you stupid." As he spoke, he pulled out a swarthy object from his bag and shook it at us ostentatiously, it was a pistol.

"Luckily, it's not Gatling." I pretended to pat my chest lightly, and said to Cao Ye and Du Xin that I didn't know if it was to comfort them or myself. Cao Ye tried to smile and not speak, but Du Xin was still absent-minded, since she entered the cave, she was very strange, silent, and preoccupied, and we just didn't care when she was scared.

At this time, Ai Qingying had already filled the pistol, and my attention immediately shifted again. I only heard him say: "Don't be afraid, don't be afraid, it's just a flare gun, but the style is more real." Looking at the way you look, you're really afraid that I'll pull out the real thing? After saying that, he laughed alone.

Soon, Ai Qingying loaded the flares, took a few steps forward with a majestic spirit, raised his arm and pointed to the deep darkness, and was about to pull the trigger.

Suddenly, several pillars of light hit us without warning, and the sudden highlight in the darkness pierced us so that we couldn't open our eyes, and a few shrill shouts followed: "Stop! Don't move! Don't shoot! Otherwise I'll shoot! "It sounds inexplicable, but it's clearly a serious threat.

I covered my eyes with my hands and tried to trace the source of the pillar of light, but before I could tell the difference, I heard a stumble of footsteps from the lower end of the ramp, and soon several figures dispersed, as if they had surrounded us in the middle.

"Who is it? Who are you? What are you going to do? "A group of eight of us suffered from this mutation, and we didn't know what to do, so we had to raise our arms to cover our eyes and shout nonsense, hoping to make a big noise, but all we got was a few vicious curses and a sudden pain in the back and buttocks, like some hard stick hitting the body.

"Squat!" One of them shouted, revealing the oppressive force that does not allow resistance, I can't figure out the specific situation, but I still don't want to annoy them, so I pulled Cao Ye and Du Xin beside me, and squatted down first, my eyes were no longer directly hit by the flashlight, and I saw a few feet next to me, all of them were field boots with high boots, and the trouser legs were deeply rooted in the boots, and then there was a dark holster on the outside of the thigh, and the more I looked at it, the more it looked like the kind of holster with a pistol that I saw on TV.