Director Wang saw that Guo Feng, Secretary Huang, Li Chunsheng, Li Liangdong, Li Guobao, and Scar had also entered the cave, and he was very excited, pointing to the slate and saying: "Heh, it's all here, well, let's tell you a good news first, the entrance to the cave is basically determined, just behind this slate, as long as you try to get it open, you can quickly find Mr. Lan and them." ”

"Then smash it! What are you waiting for? Li Liangdong grabbed the iron rod that the firefighter on the ground carried when he entered the cave, and smashed it into the stone slab like crazy. After a dull thud, the slate did not move.

At this time, I saw Dong Jianhui dodge in a hurry, hugged Li Liangdong by the waist, and shouted: "Brother Liangdong, please calm down, the situation in the cave is complicated, don't come nonsense until you figure it out, otherwise not only will you not be able to save Mr. Lan, but it may also bring us danger." ”

After Dong Jianhui shouted this, Li Liangdong immediately stopped. He drooped his head and sat on a large egg-shaped stone pier. He felt the stone pier move, and found that there was a mortise on both sides of the stone pier, he grabbed the mortise and tenon to turn the stone pier with all his might, and a miracle happened, only to see the stone pier rotate at the same time, the stone slab faintly made a "click, click" sound, and then the stone slab shook gently.

Director Wang reacted sharply and ordered: "Danger, leave immediately." ”

Just as everyone was about to leave, the slate suddenly stopped shaking, and a finger-sized gap appeared around it, and the slab separated from the cave wall. Dong Jianhui was overjoyed, beckoned, everyone flocked up, together to the slate, only to see the slate slowly move inward, and heard a "click" sound, the slate seemed to be locked by something, and an "anti-7" channel miraculously appeared in front of everyone's eyes. Everyone was stunned, dumbfounded, and didn't come back to their senses for a long time.

Director Wang picked up the walkie-talkie, and his voice trembled a little excitedly: "Report to Secretary Miao, the entrance to the cave has been opened, do you want to go into the cave immediately to search and rescue?" Please Secretary Miao for instructions. ”

Secretary Miao's voice came from the walkie-talkie, both happy and a little worried: "The situation in the cave is complicated, before you figure it out, you must not act rashly, wait a little longer, the experts in the province will arrive immediately, and after determining the signs of life, you will consider the next step." ”

At this time, the red sun was sinking in the west, the sunset was fading, and the fairy valley was shrouded in night. The firefighters started the generator that had just entered the valley, and the valley was as bright as day. In accordance with Secretary Miao's instructions, all the public security, fire and armed police personnel stayed behind to continue the search and rescue mission, and all other personnel were evacuated.

At eight o'clock in the evening, Deng Jiabao and several security guards carried life detectors and escorted the members of the provincial expert group to the Immortal Valley. There were three members of the group, one with long gray hair and long hair, who looked very old, and the other two looked like students who were still angry and bookish before leaving the school. Although the white-haired elder has white temples, he is a strong man with a red face, he is Secretary Miao's university teacher Professor Liang, a well-known life detection expert in the province, this time he was instructed by Vice Governor Liang and Secretary Miao to participate in the search and rescue, and the two student-like people are graduate students under his guidance, and this time they came to assist him in his work. When Secretary Miao saw Professor Liang, he was like a child seeing his parents who had been absent for a long time, and he pounced on him from a distance, shaking hands and hugging him. After the meeting etiquette was over, the two got down to business.

Secretary Miao said: "We have organized a large group of people to search and rescue since last night, and now it is basically certain that people are at the foot of this vast mountain." This mountain is no ordinary mountain, it is made of indestructible rock. And there may be a huge group of karst caves in the belly of this mountain, and now the entrance to the deep karst cave has been found, but we don't know the situation in the cave, and we dare not rush into the cave to search and rescue. Therefore, only when signs of life are detected in the cave and the environment in the cave is determined to be no threat to life, can forces be organized to search and rescue the cave. ”

Professor Liang kept bowing his head and said, "You're thinking too carefully. Secretary Miao, you are so sympathetic to the lives of the people of Li, it is really a great blessing for the people of Tucheng! I'll give you a reassuring pill first, a place like this with high trees and dense forests, both above and below the ground, is the best environment for animals and plants to survive. Therefore, from the perspective of the natural attributes of the environment, the danger in the cave is not great, and the danger lies in the animals themselves, such as poisonous snakes and beasts, but such dangers can be prevented by people. If Mr. Lan really disappeared in this place, then you don't have to worry, I'm sure she's alive and well now. ”

Secretary Miao clasped his hands together and said, "I hope it will be as the teacher said!" ”

Professor Liang smiled, bent down half of his body, gently patted the detector being installed and debugged with his hand, and said to everyone unhurriedly and unhurriedly: "We use the acoustic vibration detector this time, in order to convince everyone of the scientific nature of the detector, I will now give you a brief explanation of its working principle." The use of sonic vibration life detectors to find signs of life relies on recognizing the sounds made by the rescued. The device has 3 to 6 'ears' – vibration sensors – that use approximation to determine the specific location of a survivor based on the slight differences in the sequence of sounds heard by each 'ear'. The voice of speech is the easiest for it to recognize, because the designers have thoroughly studied the frequency of human vocalization. If the survivor is no longer able to speak, he can catch even the slightest noise by tapping his finger on the object next to him. Even if he was buried under a fairly solid large area of rubble, as long as his heart was still beating weakly, the detector would be able to make a correct judgment on his signs of life. ”

"Professor, you tell us the principle, science or something, we won't understand this kind of high-tech thing for a while, it's a mule or a horse that comes out to slip around, as long as you can rescue Mr. Lan, this thing is a treasure, or it's a waste. Guys say right, right? Scar said this, clearly showing his dissatisfaction with Professor Liang.

Unexpectedly, as soon as this remark came out, it achieved the effect of a hundred responses. Everyone agreed.

Scar took advantage of the situation and said: "Use practice to prove, let the facts speak, and now the top priority is to save people, not the time to say big truths." ”

Professor Liang's face was a little embarrassed, but a professor is a professor, and he never gives in to the truth. He said word by word: "I fully understand everyone's feelings, and please believe in me, believe in science, and I will definitely give you a very satisfactory result." ”

At this time, two young assistants reported that the detector had been installed and debugged and could start working.

Professor Liang ordered: "Start, carry out the first search." ”

However, there is no signal on the display.

Professor Liang said: "Adjust the orientation and continue the search. ”

There is still no signal on the display.

Deputy county magistrate Yu reminded: "Do you want to change places? ”

Professor Liang said: "Don't worry, you can't eat hot tofu in a hurry, take it step by step." ”

After constantly adjusting the direction of the search to no avail, Professor Liang decided to enter the sub-cave to search as close as possible and with few obstacles.

Secretary Miao immediately ordered Director Wang to make all preparations, select capable forces to form a search and rescue commando, and once the detector has results, immediately enter the mother cave for search and rescue.

As the night deepened, although everyone had a busy day, they still did not feel the slightest sleep, and were waiting for news with bated breath. When the midnight bell was about to ring, news came from the sub-cave that it had been found that there were very vigorous signs of life in the mother cave, which was moving slowly to the northeast. As soon as the news came out, everyone screamed wildly, venting their inner excitement, and the silent and dull Immortal Valley suddenly became a happy valley.

Secretary Miao immediately ordered the search and rescue commando team to immediately enter the mother cave for search and rescue. At this time, ten members of the search and rescue commando team, who were already ready to go and fully armed, quickly passed through the entrance of the cave and entered the mother cave under the leadership of Guo Feng.