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Thanks to Wang Feng's timely arrival with more than 500 horses, he killed behind the barbarians in a desperate situation, and then the barbarians finally collapsed, and the barbarians shouted and fled for their lives.

The place was full of jungles, and the reinforcements naturally did not go into the jungle to chase the barbarians who were more nimble than the monkeys, but they still did not escape, and the swarming army easily caught the sixty hapless barbarians who did not have time to flee for their lives.

When Wang Feng and Guo Huazhang saw the five surviving special training soldiers such as Ma Fen and Bai Er, the appearance of these survivors was not to mention how miserable the wolf was! Ma Fen was a little better, he could barely stand, his body was covered in blood, and he didn't seem to be seriously injured. But the others were miserable, they were all carried down the mountain, especially Fang Yishan was the most seriously injured, he was hit with a wooden spear on the back of the head, and at this time he wrapped a circle of gauze, and the gauze was almost all blood, red and black, and it was weird.

Liu Wenbing was lying on a stretcher, and his mouth was full of dissatisfaction:

"Wang Feng, you kid, you didn't rush over until this time, and Lao Tzu almost died in the hands of those monkeys. Fuck it! ”

Liu Wenbing's breath of speech was a little weak, and Wang Feng had to patiently explain:

"Brother, no! Because the team of people and horses have gone to cut down trees, we will gather people as soon as we receive the letter, how easy is it! Thanks to General Guo, more than 500 people were gathered in the fastest way, and the barbarian chieftains were very cunning, and there were all the fucking roadblocks all the way, so we hurried and hurried, and it was okay! The brothers persevered until we arrived! Brother, admire! Enough guys! ”

Back at the station, Fang Yishan died of his injuries.

None of the others were injured, most of them were arms and legs, and they didn't seem to be in danger of life.

After a few days, the seven survivors recovered quite well, and Ma Fen was the least injured and had already resumed his normal activities, as if nothing happened.

However, on the tenth day, Ma Fen and Bai Er and the four survivors suddenly had a fever, first cold, then fever, high fever did not go away, and at the same time, they were extremely cold.

Ma Fen and the three of them all understood that this was malaria.

On that day, the mountain bag was against the enemy, everyone lay in the grass, and I don't know how many times I was bitten by mosquitoes, at that time, the strong enemy was around, and the mosquito bite was naturally nothing, and now I think about it, many of these bites of the mosquitoes must be carriers of the malaria parasite, and it is natural to get malaria after being bitten by them.

Later, the science and technology exhibition realized that malaria was originally a parasitic disease caused by the bite of a mosquito carrying the malaria parasite, and it was not compatible with miasma or anything. All three people knew that the special medicine for malaria was quinine, that is, cinchona cream, and at first people only knew that the bark of the cinchona tree could treat malaria after grinding it into powder, and later mastered the refinement of quinine. However, at this time, cinchona trees are still growing in South America, so it is impossible to collect them at all.

The three of them looked at each other, and said in their hearts, it's okay now, wait for death!

However, it is said that Mao Geng got a medicinal bath recipe from the Dong people, which seems to be somewhat effective in dealing with malaria. The three of them pondered that this medicated bath might have some kind of body-strengthening effect, that is, taking a medicated bath could improve the body's resistance, and in the era when there was no special drug quinine, the only hope was to rely on one's own resistance to carry it, and finally be able to carry this damn malaria.

If a dead horse is a live horse doctor, then try the method of soaking in a medicinal bath!

Ma Fen's injuries were not serious, and those small wounds had scabbed over at this time, so he could take a medicated bath without any obstacles, but others couldn't, Liu Wenbing's thighs and arms were not lightly injured, and he couldn't take a medicated bath, so he had to retreat to the next best thing, and used people to scrub his body repeatedly with medicinal water. Tang Kai is a little better, he mainly has calf and face injuries, and when he takes a medicinal bath, he just exposes his calf outside the barrel.

The medicinal bath therapy was carried out for two days in a row, but the person was not cured, but two more special training soldiers who sacrificed their lives to kill the enemy that day died, and now only Bai Er and Du Chong are still breathing.

Liu Wenbing's condition did not improve at all, he still had a cold stomach, and his body began to swell.

"Brother Han, Brother Wang Feng, I finally crossed over to the Song Dynasty, but you see, I have such an incurable disease as malaria, I really can't fucking think about it!"

Wang Feng looked at Liu Wenbing's miserable appearance and comforted:

"Dude, don't be discouraged! This malaria, even if there is no specific medicine, six or seven out of ten can be cured by themselves. Dude, I'm sure you can carry it. ”

Liu Wenbing smiled bitterly and said:

"Alas! I know my physical condition, and I'm afraid I won't survive for a few days. ”

Han Huanzhang looked at Liu Wenbing's pitiful appearance, and suddenly said:

"Dude, don't be discouraged! Maybe you'll have to cross once in a hit, right! That's the thing, you Liu Wenbing sleep and wake up, maybe you will travel to the Qing Dynasty, maybe the Ming Dynasty, or the Tang Dynasty, or even the Han Dynasty. Well, I think it's better to be in the Han Dynasty! Dude, yes! Just go to the Han Dynasty! ”

Wang Feng also echoed on the side:

"That's right! Dude, if you travel to the Han Dynasty, are you ready? The Han Dynasty didn't have open gunpowder, don't think about your 'meteor bomb', I think, you have to do some other homework before you cross, it's the so-called be prepared. Well, let's help you figure it out and see what works best in the Han Dynasty. Of course, Wang Feng wanted to take the opportunity to distract Liu Wenbing's attention, Liu Wenbing was afraid of death, and the more this happened, the more it was not conducive to the sick body, so he pushed the boat down the river, wanting to coax Liu Wenbing to relax, don't keep worrying about it as if he was going to die in the next moment.

As soon as he heard that he could cross for the second time, although he knew that this was to make himself happy, Liu Wenbing still had the idea of what to do after all, Liu Wenbing may have been a little confused at this time, imagining the scene of his crossing to the Han Dynasty, and he really couldn't think of anything that could be taken out for a while. However, Liu Wenbing immediately thought of something, and said very seriously:

"You're not right! After I arrived in the Han Dynasty, I could actually make 'meteor bombs', and gunpowder doesn't seem to have any technical content! It's nothing more than nitrate, sulfur and charcoal, charcoal and sulfur have long been available in the Han Dynasty, as for nitrate, I remember that the method of piling up nitrate was not mentioned in the novel, where manure and civil ash were piled together, and then there would be continuous production of nitrate, right? ”

"It seems like that's the case." Wang Feng had also read about this pile of nitrate, but he had not tried it.

Animal feces contain ammonia, this is the basic knowledge of chemistry, ammonia in the action of nitrifying bacteria, gradually oxidized from nitrite to nitrate, and plant ash is rich in potassium salt, nitrate and potassium salt reaction, it obtains, and ** this thing dissolves in water, it is not difficult to separate from nitrate. Therefore, the production of nitrate is not a matter of much technical content, as long as there is ammonia and plant ash, water, soil and sunlight conditions are suitable, nitrifying bacteria, this magical organism can quietly produce nitrate, the nitrate soil is purified, and a relatively pure nitrate can be obtained.

Hearing that he could make nitrate by making nitrate, Han Huanzhang immediately became interested, his eyes lit up, and he said:

"Can manure really make nitrate? I seem to have heard that Chile produces nitrate, and they dig it out of the mining ground, and this is the first time I've heard of this method. I think the two of you seem to be hearsay, Wang Feng, you have the ability to show me Ming'er. No, no, no! is to show Liu Wenbing that he is going to travel to the Han Dynasty, at least he can pretend to be a Taoist master, and he can refine nitrate casually, that is a master! If the spell of refining nitrate doesn't work, maybe you will have to wear a bag, so, Wang Feng, you still have to practice this matter, so that our Liu Tianshi can master a crossing technique, so that the people of the Han Dynasty can be fooled, right! Maybe as soon as Emperor Wu of the Han Dynasty is happy, he will worship Liu Tianshi as a general, and then there will be nothing to do with Wei Qinghuo's illness. ”

Well, that's a good point, Emperor Wu of the Han Dynasty should be stronger than the weak emperor of the Song Dynasty. However, you really have to try it first, and it is obviously necessary to master a magic skill, so Liu Wenbing pleaded:

"Brother Wang Feng, you see that your brothers are like this, the only hope is to cross again, buddy must satisfy my brother's little wish! I want to hurry up and learn a craft, well, how about crossing the necessary craft? Before I cross, let me say that too! Please, buddy, I think so, you explain it as quickly as possible, immediately, immediately, start the soil nitrate demonstration project. Good no good? ”

Hehe, it seems that if Liu Wenbing didn't see with his own eyes how the soil nitrate was made, he would be blind.

Then try it!

More than 1,000 people discharged countless feces and urine every day, and under the command of the traversal, the simple toilet had already been repaired, so the resource of feces was in a state of centralized storage before this, therefore, the main raw materials for the production of soil nitrate are not lacking, and of course there is no shortage of plant ash, so Wang Feng mobilized manpower to arrange the production and marketing of real yàn.

Only two days later, Liu Wenbing asked if it was producing nitrate.

Wang Feng looked at Liu Wenbing's appearance, malaria still continued to torment him, this guy's face was still as bad as ever, but it didn't seem that his condition had deteriorated further. Well, poor fellow! Paying attention to nitrate production can always divert his attention, yes, as long as he can divert his attention, he might as well talk about other topics.

"Dude, how can nitrate be produced so fast! Nitrifying bacteria it also has to have time to gnaw a little bit, a little bit of digestion is not! As the saying goes, slow work makes fine work. I'd like to talk to you about your 'meteor bomb', because with gunpowder, making your 'meteor bomb' is a piece of cake, but, in my opinion, your 'meteor bomb' needs to be improved. ”

"Hey, hey! I already have a solution to this, it is still not possible to use bamboo tubes as the material of the shooter, to change it to iron or copper, the Han Dynasty already has iron tools, no matter how bad it is, you can still use bronze, even if it comes to the Warring States, bronze is always there. Lao Tzu is from Chu when he is in the Warring States, and when I take out the trump card of 'meteor bomb', it is estimated that Qin Shihuang will be out of play! ”

This guy actually wants to go to the Warring States to be angry!

However, to defeat the Qin soldiers, the copycat version of the weapon is only afraid that it will not work.

"Don't you think the barrel should be designed to be a little longer!" Wang Feng felt that the bamboo tube shooter he used before was a little shorter, and he could not maximize the use of the chemical energy thrust of gunpowder.

"You're right, I've thought of this too."

Depend on! This guy is very quick-witted! Does this look like death!