Our ideals should be noble. We can't get to the top, but we can climb halfway up the mountain, which is much better than staying on flat ground. If our hearts are illuminated by the radiance of love, and we have ideals in front of us, then there will be no difficulties that cannot be overcome. Premchand

This is how the night of the ambiguous and resentful hot spring was spent.

Early in the morning, Li Baoqiang woke up, the bonfire was dying, Candy was lying at Li Baoqiang's feet, still vigilantly listening to the movement in the valley, Zhao Xiaoxiao felt a hard thing against his abdomen, fluttered for a moment, and then understood, glared at Li Baoqiang with a blushing face, Li Baoqiang touched his nose playfully, "Normal physiological phenomenon." Since the breakthrough in the relationship between the two, Li Baoqiang has no face or skin, and occasionally he will be glammy.

Li Baoqiang picked up a few pieces of sulfur crystals by the hot springs and put them in his backpack. On the way down the mountain, Li Baoqiang found a group of wild deer drinking water around a puddle on the side of the road, and some wild deer licking the rocks on the edge of the pit, Li Baoqiang's heart moved.

The wild deer herd was alarmed by the crowd and fled in all directions. Li Baoqiang came to the puddle, picked up the water and tasted it, it was bitter and salty, "It's brine!" Li Baoqiang is sure. It seems that the hot spring party not only harvested the hearts of beauties, but also discovered important mineral deposits, which is worth the trip, Li Baoqiang was secretly happy.

Under the strange eyes of the fat man and others, Li Baoqiang and the others returned to the school conference room and had breakfast. Professor Zhao looked calm and a little worried, looked at his daughter who was blushing, sighed softly, and didn't say anything. He Qun's expression was abnormal, and his eyes became even more gloomy.

Knowing that Li Baoqiang took Zhao Xiaoxiao and the female soldiers to the hot springs, the fat man said ambiguously to Li Dayong: "I smell it, I smell the smell of adultery." ”

"If you want to make progress in your relationship, you don't have a chance without taking a bath. There is no chance of taking a bath at home, so be sure to go outside to wash. When the Qixi Weaver Girl went down to take a bath, met the Cowherd, and performed a love story of earth-shattering ghosts and gods, Zhao Linger took a bath outside, met Li Xiaoyao, and also staged a fairy romance, this incident at least tells us a little: there is no chance to take a bath at home, you must go outside to wash. ”

The fat man pointed at Li Dayong, because the two also had thoughts about the two female college students. The thin man nodded, looked back at the two female college students, who turned around and ran away with blushing faces.

Li Baoqiang asked Zhang Juncai to arrange for the villagers to take turns to bathe in the hot springs, and the old Chinese medicine doctor Zhao Benzhang also happily stepped forward and said: "If it is really a sulfur spring, there is hope for the villagers' skin diseases." Recently, Zhao Benzhang found that some villagers have been struggling to recover from their skin corroded by acid rain, and other villagers have also had skin infections one after another.

After breakfast, Li Baoqiang found Professor Zhao, his lips opened, but he didn't explain what happened last night, and Professor Zhao didn't ask. Li Baoqiang took out the sulfur crystals and told Professor Zhao that he had also found a brine pit, and Professor Zhao's face finally turned cloudy, after all, the daughter who had worked hard to raise was abducted overnight, and anyone would be depressed.

"Brine wells can be arranged to be dug slowly. But I want to make explosives, nitroglycerin. Professor Zhao was secretly taken aback when he heard Li Baoqiang's proposal. Li Baoqiang gave him too many surprises and surprises, such as the nitroglycerin that Li Baoqiang said now, which is no longer used.

"Nitroglycerin is too unstable as an explosive." Professor Zhao proposed.

"I'll improve, but the explosives have to be made." Li Baoqiang shuddered at the thought of the siege of the rat swarm, flour bombs could be used in the grain depot, but in the simple city wall of Hope Village, there were no weapons of mass destruction, so it was difficult not to be attacked by the rats.

"Okay, I'll help you, and let you see that my reputation as a professor is not for nothing!" Professor Zhao's passion also exploded.

In the next few days, Professor Zhao and the original geology students such as Fatty, Thin, and He Qun began to investigate the mountainous areas around Hope Village under the protection of a small team of armed members led by Li Baoqiang. After all, they had already obtained some geological samples before, this time specifically to find the key ore to make explosives.

The Qinling Mountains is originally a place rich in natural resources, because of inconvenient transportation and other reasons there is no large-scale development, Li Baoqiang and Professor Zhao and others wandered around the mountains for a week, found a lot of superficial mineral sources, a peat layer, a lignite seam, a saltpeter ore layer, an iron ore layer, if you can mine underground on a large scale, the output will be more amazing, but unfortunately the current production capacity can not reach at all, in fact, even so, the harvest is quite rich.

After marking the location of the minerals, Li Baoqiang arranged for Zhang Juncai to organize the villagers to excavate, the mountain road is not easy to walk, one person and one basket are carried out, the villagers know to make explosives to defend their homes, and their enthusiasm is also very high, and at the same time, the unique spirit of Sichuan people who can endure hardships has infected Li Baoqiang and others, so that Li Baoqiang is more determined to protect the idea of this group of loyal villagers.

After half a month, the villagers carried back several tons of lignite and saltpeter, and also collected a large number of sulfur crystals near the sulfur spring. Li Baoqiang organized an armed team to hunt a lot of wild animals, in addition to marinating a lot of bacon, more to obtain a large amount of animal oil.

Finally, Professor Zhao's development began.

Professor Zhao asked He Qun to find a clean large bottle, put sulfur crystals into the bottle, seal it in the bottle, put it on a coal stove, calcined it, and evaporate it into water vapor, and a glass tube on the bottle passed into a plastic water basin, and the steam entered the water, and after cooling, it turned into sulfuric acid. A few days later, Professor Zhao collected a large amount of sulfuric acid, which was properly concentrated and stored in plastic buckets.

The next step is to make nitric acid, Professor Zhao has asked the villagers to crush saltpeter, about the size of a walnut, and then combine sulfuric acid with saltpeter, and then heat and distill nitric acid vapor, which is also condensed in water with a glass tube, and nitric acid is also produced.

At the same time, Li Baoqiang packed all the collected fat in large clay jars. Glycerol is now separated from the fat by alkalizing. To do this, there must be baking soda or lime, and with any of these to break down the fat, you can form a soap that separates the glycerin, which is exactly what Li Baoqiang wants.

It is convenient to pour lime, but the result is a calcareous soap that does not dissolve in water, so it is useless. Conversely, if you use baking soda, you get a soap that dissolves and can be used daily.

In fact, baking soda can also be made by clay methods, a large amount of algae in the water is collected, they are dried first, and then burned in the open pit, and a lot of gray powder will be obtained, for a long time, people have called this substance "natural baking soda".

But Li Baoqiang is a person who proceeds from reality, he knows that Zhang Juncai collected a lot of baking soda from the supermarket, and in order to purify the explosives, he directly used these pure baking soda.

After getting a large amount of "soap paste body", Li Baoqiang added some collected cheap perfumes and mixed them, poured them into several small boxes of molds, made a large amount of soap, and gave Zhao Xiaoxiao a few pieces, Zhao Xiaoxiao happily kissed Li Baoqiang. This can be regarded as the benefit of making explosives, Li Baoqiang thought happily.

The critical moment has finally arrived. As long as it goes through the last process, what everyone has spent half a month trying to get can be manufactured.

When carrying out the last process, Professor Zhao, in order to avoid endangering everyone in case of an explosion, he and Li Baoqiang took a bottle of nitric acid and a few bottles of glycerin, left the village for a distance, and found a remote place to deal with it alone.

Professor Zhao had concentrated the glycerin by evaporation beforehand, and now he uses a sink to mix a small amount of nitric acid and glycerin. As a result, you don't even need coolant, and you get some yellow mixed oil. After it was made, he took a bottle to Li Baoqiang and said in high spirits: "This is nitroglycerin!" ”

A yellow, oily, transparent liquid that can be exploded by vibration and is a chemical hazard. At the same time, nitroglycerin can also be used as a reliever for angina.

At that time, after long-term thinking and practice, Nobel realized that in order to make nitroglycerin explode, it must be heated to the explosion point (170~180 °C) or impacted by gravity. The search for a safe detonating device was precisely the subject that Nobel set for himself. In May 1862, with a loud bang, the ditch splashed and the ground shook, and he discovered the principle of detonating nitroglycerin for the first time.

The violent explosion of nitroglycerin with a small amount of ordinary gunpowder is the "detonator" invented by Nobel. To this end, in 1864 he obtained the first patent in Sweden for the detonator of nitroglycerin, completing his first major invention. In February 1868, the Swedish Society of Science awarded the Nobel father and son the Gold Medal for the elder Nobel's long effort to make explosives from nitroglycerin. For the first time, Nobel made nitroglycerin an explosive that could be used in industry.

It is true that it is a terrible drug, and its explosion is probably ten times more powerful than ordinary explosives, and its explosion often causes accidents, but since the discovery of the way to make it into explosives, it is safer to mix it with a porous, liquid-absorbing solid (clay or sugar) and use this dangerous liquid.

"Are we going to use this liquid to fry rats?" Professor Zhao asked Li Baoqiang suspiciously.

"Use it to blow up the mountain first!" Li Baoqiang replied confidently. "This nitroglycerin can produce great power. Since granite is very hard and has a lot of resistance, it explodes even more powerfully. ”

The next day, Li Baoqiang led the team to a valley not far from the village, with cliffs on both sides and a gentle valley in the middle, and the stream was flowing loudly.

Li Baoqiang and the others climbed the cliff, dug several pits in the rocks, and used a rope to hang a piece of iron weighing several catties on top of the explosives pit. In addition, a long rope was dipped in sulphur beforehand, one end of which was tied to the center of the first rope, and the other end was pulled to the ground a few meters away from the explosives. When the rope stained with sulfur is lit on fire, it will soon burn to the junction with the first rope. As soon as the fire reaches the joint, the first rope will burn and the iron will fall on the nitroglycerin.

After the equipment stopped, Li Baoqiang asked the team members to continue to climb the hillside, as far away from the cliff as possible, and then poured nitroglycerin into the pit until it was level with the pit. Then he dropped a few more drops on the surface of the rock, and when he had finished placing it, Li Baoqiang lit the rope stained with sulfur, and then quickly withdrew, finding the people watching from the hillside.

This rope is estimated to burn for more than twenty minutes. Sure enough, twenty minutes later, only an earth-shattering explosion was heard. It was as if the mountain had shaken to the roots. Rocks flew up like volcanic eruptions. The violent vibration of the air produced a tremendous force, and the crowd, even though they were a kilometer away, were also tossed to the ground.

After the explosion, Li Baoqiang couldn't help but be speechless, he had only heard the instructor talk about the power of nitroglycerin, and he had not personally felt it, and this time he knew that Nobel could become the father of explosives, and it was true.

Li Baoqiang immediately led everyone down the mountain to observe, only to see half of the cliff collapsed, the gravel lay across the valley, and the stream stopped flowing in front of the dam formed by the rubble, slowly accumulating, and a small lake was just around the corner.

The fat man opened his mouth in surprise: "I'm obedient, next time you should build an atomic bomb, right?" ”