Under the harsh tropical sun, a group of people divided into three groups and walked through the dense forest. Pen, fun, pavilion www. biquge。 info They ran through the woods with wooden poles in red and white, shouting at each other at a great distance, or playing the flag, and from time to time writing something on a piece of paper. This is Liu Yao taking Jiao Huang, the school's surveying and mapping team and the guards team leaders to do topographic mapping, and by the way to find the location of the Shilu Iron Mine.

Speaking of which, this is the graduation assignment of the first surveying class of Liberty Mountain School, although they have theories that are far ahead of this average level of time and space, but all the tools are just a few wooden poles and a few large bowls of water, but they have to face the dense primeval rainforest and rugged terrain.

In the harsh sunlight, Sun Zhuang stood tremblingly at the end of the branches, struggling to reach his head to the canopy at the top of the woods. In the dense forest in the distance, a light smoke slowly rose from among the branches and leaves. Sun Zhuang made a wooden stick with a wooden board fixed at the top of it and landed on the branch where he was standing, creating a small platform. Holding a wooden stick in his left hand and grasping a branch with his right hand to stabilize his body, Sun Zhuang could no longer free his hands to do anything else, but his task also included hanging a rope tied to a stone at one end so that Liu Yao could climb up and measure the distance from the platform to the ground by the way to obtain an accurate elevation of the ground.

Liu Yao climbed up at Sun Zhuang's feet, breaking off a branch and throwing it down. His life during this period allowed him to judge that this was a precious nanmu. The trunk of the tree is straight and thick, and there are no branches within tens of meters above the ground, if you don't rely on the climbing rope hanging down by Sun Zhuang, you can't imagine how you can climb up at all. "Then how did Sun Zhuang climb up?" Liu Yao struggled profusely as he recalled that Sun Zhuang had climbed up quickly with just a thick rope on the trunk of the tree. Not only do you have to have someone to clear the way, but you also have to use a seat belt.

Liu Man looked up worriedly, until his father climbed to the place where there were branches, and his hands and feet were useful, and then he returned to the fire in front of him, and broke off the branches with green leaves around him and pressed them on the fire to make smoke. Blue smoke rises from the fire, but instead of going up, it is shrouded in the dense foliage of the rainforest. Liu Man looked up at the two people on the tree, and suddenly heard a sound like raindrops knocking out of the fallen leaves around him, which was the sweat droplets of the two people on the tree.

Liu Yao climbed to Sun Zhuang's side and took a big breath, hoping for some fresh air, but was quite disappointed. The air in the rainforest is always damp and sticky, full of the smell of corruption and wild growth. He shook his head, took out a large bowl from his backpack and placed it on the platform, poured some water from the bamboo tube behind his back, and took out a buoy and put it in the large bowl. The activity of the two men caused the branches to shake constantly, making it almost impossible to maintain balance. Finally gaining a firm footing, Liu Yao bowed down and glanced at the red and white wooden pole sticking out of the canopy from the buoy in the big bowl where the light smoke rose in the distance, and reported the data. Liu Man under the tree repeated the data, then used charcoal strips to record the confirmed data on the yellow rough paper, and drew a few strokes on another piece of paper to add some more lines to the contour map. Liu Yao put down the big bowl and carefully poured the water back into the bamboo tube. Ironically, in a humid rainforest, if there is a stream, a person may experience dehydration symptoms because they do not have access to liquid drinking water. Thinking of this, Liu Yao stuffed the bamboo tube more carefully, did not take out a wooden protractor and put it on the platform, but also measured the angle between the target and the north direction by visual aiming, and then asked Liu Man under the tree to make a record on paper.

After measuring a set of data, Liu Yao climbed down first. Sun Zhuang packed up his tools in the back, sat on the branch and waited for Liu Yao to go down to the ground, and then untied the safety rope tied to the tree. Then he had to climb down without a safety rope.

After going down to the ground, Liu Yao sat on the ground, his face covered with moss and green marks on the bark, sweating profusely as if he had taken a bath, and he no longer had the strength to move. Sun Zhuang climbed down the tree, also drenched in sweat, but he didn't look very tired. He beckoned Liu Man to quickly take out the record, report the data he remembered, and check it with the record on the paper. Fortunately, the data is correct, and everyone's busyness has been rewarded this time.

Realizing that they had finally obtained another set of data, the father and daughter took the bamboo tube and drank it up, only to find that they had drunk it all. Liu Yao stood up and wiped the sweat from his head, picked up another bamboo tube that had been filled with water on the tree, and gave Liu Man a few sips. This is their last reserve of drinking water and their last measuring tool. After drinking this tube of water, the measurement is practically impossible. Liu Yao put down the empty bamboo tube, raised his head and shouted to the sky: "Where is this iron mine?" ”

The observer of the information group, who was monitoring at all times, couldn't help but reply: "1,400 meters to the northwest!" The accuracy of your water bowl mapping error is so large, how can you get accurate positioning without developing surveying and mapping tools first! Besides, if you drink all the water, you can't do it again if you spill the water in the bowl! ”

Zhang Wei stood behind the observer with his elbows in his hands, without saying a word, thinking to himself that you may not be able to do this level if you go there, is the surveying and mapping tool so easy to develop? Without glass, there would be no level, and the manufacture of glass is far from easy.

Zhang Wei walked to his seat and recalled yesterday's meeting. China, the United States, and Japan are all using lasers to irradiate the shell, or to deliver energy into the sphere, because the high-energy lasers fired from the three test sites all disappear into the transparent shell, sinking into the sea, and have no effect on the world displayed inside the shell. As of yesterday, each test site had more than 100 gigajoules of energy fed into the laser, which is the same order of magnitude as the energy contained in the first atomic bomb. China's test site is strategically located, with more than 500 gigajoules of energy being continuously input from the nuclear reactor that went into operation last month, which is already the energy level of a modern nuclear bomb.

At yesterday's meeting, all countries were skeptical of the continued importation of lasers, and only the United States firmly supported it, and the logic was simple: "Anything that can be achieved is worth taking until it proves ineffective." Although it is no longer possible for mankind to consider factors such as cost in exploring this transcendent and mysterious extraterrestrial intelligence, Zhang Wei still feels that it makes little sense to continue to do useless work, and it consumes China's resources.

The meeting ended with the adoption of a proposal by the United States to create a special foundation, to which all countries would be funded, and at the same time have the same share of the voice according to the amount of the funding. The foundation pays for the construction and operation of China's nuclear power plants. Zhang Wei couldn't help but realize that the discussion he tried to initiate to explore the method had achieved the purpose of settling accounts and asking for money.

When Commander Qin walked out of the conference room, he happily patted Zhang Wei on the shoulder: "This method is good. Remember that you are from Ningbo. You Ningbo people are good at doing business. Ha ha! ”

Zhang Wei smiled and said, "Commander, in fact, I hope you will come up with more effective exploration methods. Expense is really not my purpose. ”

"I know that. But do you think people will really disclose their research plans and findings? Commander Qin looked around, and the representatives of various countries were talking in twos and threes on the way to the restaurant, and there was a peaceful atmosphere.

"Aren't we completely public? I've talked to other countries, and they're not hiding anything. Zhang Wei asked puzzled.

"That's because there's nothing to hide. But that doesn't mean no one wants to hide. Commander Qin said softly, smiling as he walked towards the commander of the U.S. Asia-Pacific Fleet, who was reaching out to him.

In Liu Yao's real world, he can't see all these open and secret battles, and even if he does, he shouldn't care. He was comparing field mapping data with materials copied from a scroll. This is a detailed record of finding iron ore excavation sites, including a very useful way of guiding a few prominent hills as markers, and how to locate one of the latitudes and longitudes. Liu Yao only needs to measure the distance between several mountains to determine which of the key mountains on the map is in reality, and then he can find the precise excavation point. But it was this simple measurement that was overwhelmed by the dense tropical vegetation, especially the vegetation, which created an insurmountable difficulty: if people were standing on the ground, they would not be able to see each other, and they would not be able to survey, but only by standing on the treetops and subtracting the distance from the treetops to the ground. As a result, all the data becomes more and more inaccurate.

After measuring another set of data, seeing that it was already noon, Liu Yao said to Sun Zhuang, who was still packing up tools on the tree: "Sun Zhuang, play the flag!" ”。

Sun Zhuang answered, put away his tools, took out two red and white flags, and waved them at the survey point in the distance. Seeing that the other two survey points were shaking the survey rods from side to side, he lowered his head and asked, "The other party has an answer, please ask for information." ”

"I'm going to move west-northward toward the peaks. Assemble at the place. Liu Yao shouted while lying on the ground.

Sun Zhuang first stretched out his head to look at the mountain peak that Liu Yao said, and raised the flag. While reminding: "Sir, that place is not in our mapping plan. ”

"Yes. It was the highest peak that could be seen nearby, and the mapping we planned was almost complete, now go there and observe the nearby terrain and go home. Liu Yao explained under the tree.

In fact, Liu Yao completely abandoned the formal surveying method of finding the location marked on the scroll, except that rudimentary surveying methods could not deal with the pristine rainforest environment, partly because there was no water in the bowl. However, he did not intend to abandon his goal, he chose the three main hills on the map he had brought, noted the relative distances between them and the general topography, and planned to climb the different nearby hills, and locate the three mountains purely by visual inspection.

Liu Man helped pack up his tools and step on the fire extinguisher, and asked, "Dad, are you saying that we have to give up all surveying and mapping methods and rely purely on our eyes to see the contour map and the shape of the actual terrain?" ”

Liu Yao replied not without frustration: "Yes." ”

"The principle of this new method is very similar to throwing shoes, isn't it?" Liu Man thought of a stalk in Guo Degang's cross talk, and laughed tiredly.

"Get out! I'm telling you, you can only do it yourself, you can't tell anyone else. Liu Yao said humbly.

"Why? Although on the one hand, I think it is similar to Guo Degang's throwing shoes, on the other hand, I also think it can solve the problem. Liu Man said with difficulty, almost laughing until he couldn't breathe.

Liu Yao tried to raise his leg to kick his daughter, but he didn't have any strength at all, but he still explained very seriously: "This method of solving problems based on experience and feeling cannot be spread from us. What we disseminate must be scientific, standardized, and discerning. ”

Liu Man felt that there was something wrong with her father's point of view, but her sense of responsibility was obviously only to the point of beginning: "The way to solve the problem is a good way." We are here to reshape civilization, not to reshape a certain style of civilization. Don't talk about it, let's talk about it when I have water to drink. ”

All the tools were put into the backpack, the coconut shell bowl clanged inside, and the last bowl of water was drunk by the two people in the tree.

"Sir, the other party came to ask for the estimated time of arrival!" Sun Zhuang shouted from the tree.

Liu Yao pondered for a moment, raised his head and shouted: "Our team's estimated arrival time is between 3-6 hours!" Please report the estimated time of arrival! ”

Liu Man rolled his eyes and said, "You are making history again." I bet everyone will say 3-6 hours if they are not sure about the time in the future. ”

"Mr. Report, both the Mei Jiaju team and the Jiao Huang team said that the estimated time is 3-6 hours."

"Toldyou" Liu Man occasionally pops up in English when there are only two people, himself and his father. At the beginning, the family originally planned to immigrate to Australia, so they were trying to learn English. Now the use of English has become a little entertainment among them.

The group made an effort to walk in a northwesterly direction. The dense forest was dimly lit, with a stale and damp atmosphere, and if you hadn't seen the dazzling sunlight in the treetops, you would think it was close to dusk. For the sound of shaking branches and various animals that appear around them from time to time, the three people who are struggling to climb the mountain have long been familiar with it and automatically ignore it. Sun Zhuang opened the way with a machete in front of him, and kept saying in his mouth: "This machete is so cool." ”

Liu Man walked in the middle, took a step and said: "ihatetropical". Originally, she was slightly chubby, she didn't like the tropics always making people sweat, but now although she has lost a little weight, Hainan in October is still very hot, and walking through the dense and dim jungle is sweat and blades of grass, which is very uncomfortable. In order to avoid injury, Liu Yao let Xiao Man put on the clothes he brought, for this world, this is an invulnerable divine clothes, but it is even more stuffy. After the break, Liu Yao was still holding the machete at first, and gradually lost his physical strength, and the closer he got to the destination, the steeper the mountain became, and he needed to use both hands and feet from time to time, so he had to insert the machete back into the scabbard.

Sun Zhuang cut down trees in front of him to open the way, and climbed the trees from time to time to check if he was taking the wrong road. Although he was very skilled in climbing trees, he still felt physically exhausted, and the sun in front of him was gradually turning west, and it was estimated that it would be 3 hours from the start of the last flag.