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In addition to the warehouse compound in the county town, another stronghold across the city is by the sea, where the ship ran aground. Pang Yu mainly worked here during this time. The architect, who used to draw drawings on a computer, has experienced the "thrill" of everything from design to construction in the last few days -- he and another graduate of Tongji Civil Engineering and Architecture in Shanghai worked together to plan a simple camp next to the beach where the ship ran aground in two days with 23 men from the third and fourth classes of Team A. The house was too late to be built, so I built a few sheds with bamboo and wood, so that everyone would not sleep in the open air at night.

Of course, the most important task of the seaside personnel is to get the ship as good as possible and get the 3,000-ton creature back into the sea. For this reason, the vast majority of the laborers of the two teams were sent to the seaside, and more than 80 people dug sand for four or five days in a row, digging a big pit around the hull, and by the midnight tide, dozens of ropes were dragged and pulled, and finally the "Qionghai 207" ship floated on the water again.

Everyone cheered the day the ship was launched, because it meant they could flee the place at any time. While no other place is necessarily better, it is much more reassuring to have strategic mobility.

The next step was to store enough food and fresh water on the ships, but the work would not have to be done by many people. The sixth class of Team B led by Master Li of the kitchen - the cooking class can complete this work independently.

The next step is to focus on strengthening the team's combat effectiveness. In the past few days, Wang Ruobin has made a lot of firearms, but the number of matching bullets is insufficient.

If there is a gun but not a bullet, the musket is better than a burning stick. Fortunately, Wang Ruobin's small workshop has a set of tools for making zuò bullets, lead blocks, empty bullet shells, and thunder mercury used as a primer have some reserves, plus some time ago when attacking the city, the bullets fired out were also recovered afterwards, and the bullet shells can be solved, and the only troublesome thing is the propellant.

The members of the arsenal held several meetings, and there were quite a few chemical experts in this crossing team, and everyone proposed various proposals, and finally discussed, the most practical and feasible way is two:

One is to make traditional black powder, the best ratio is 75% **, 15% charcoal, and 10% sulfur, and after uniform mixing, it is the oldest gunpowder in China. Its advantages are that the preparation is simple, the properties are stable, and the raw materials are also easy to make - ** go to the toilet, pigsty and other places to scrape the nitrate-containing soil, sulfur found in the warehouse ready-made, charcoal homemade. The disadvantage is that it is less powerful.

Another is the manufacture of fire wool: sulphuric acid is obtained through guò pyrite and sulfur - nitric acid is replaced with sulphuric acid - degreased cotton is soaked in nitro-sulphur mixed acid, and then dried - a powerful explosive cotton can be made. The explosive force is equivalent to four times that of ordinary black powder, and the cotton burns very well, and there is basically no burning residue. If it is used as a propellant, the chamber will be clean.

However, the disadvantage of fire cotton is also its power, the explosion force is too large to damage the barrel is one thing, the most terrible thing is that nitroglycerin is extremely unstable, and a slightly more violent shaking may lead to an explosion. It is highly prone to accidents during production, transportation and use.

After weighing the pros and cons, everyone finally decided to make black powder and reload a batch of bullets to ensure that the team was armed. Fire cotton can be reproduced when the conditions are ripe, and in the future, it will be used as artillery propellants, as well as grenades and the like.

Once a decision has been made, it must be implemented. Soon, under the leadership of several chemical experts, most of the members of the crossing group began a vigorous movement in and around Lingao County - cleaning toilets.

Scrape the soil from the side walls of toilets, pigsties, cattle pens, old walls in the courtyard, cliffs, caves, and the ground that is not easy to be washed by rain, crush and grind finely, and put the ashes into a large pot at a ratio of 8:1, and heat to about 75 degrees Celsius to boil. Then pour out the solution and filter, repeat several times. The potassium ions in the plant ash are used to separate the nitrate in the soil, and the nitrate aqueous solution is obtained, which is heated and evaporated, and the relatively pure ** crystals can be obtained by the guò crystallization method. After that, it is fully mixed with carbon powder and sulfur powder in proportion, and after drying, it is finely crushed into fine powder, and finally the surface is polished with a roller to make granular black powder. Compared with traditional powdered gunpowder, granular gunpowder burns faster, has higher explosive power, is stable in nature, is not easy to be separated from nitrate and sulfur, has reduced water absorption after surface polishing, and is less likely to be damp, so it can be used as a propellant for modern firearms.

The whole set of principles and manufacturing processes is not too complicated, but the operation is extremely cumbersome. And no one in any of the crossing teams had actually done such a thing. is Wang Ruobin, when he made soil gunpowder, he also went directly to the store to buy finished products, and he never did anything like scraping the wall skin and boiling soil nitrate.

For a whole week, the seaside stronghold was stinking, and the smell of dirt scraped from places like the toilet pigsty was boiled in a large pot, and of course it couldn't smell good. Fortunately, the wind on the seashore blew a lot away, otherwise I am afraid that before the gunpowder is made, people would have been stupefied.

Failed many times, wasted a lot of material, and ended up with a small barrel of blackened granular matter. Everyone in the arsenal watched as Engineer Xu weighed the weight with a scale, poured the black powder into an empty cartridge case, put a good primer, and pressed the warhead with a machine...... finally handed over to Tang Jian.

Tang Jian took the shiny newly-made bullet, glanced at it, put it into the five or six semi-automatic rifles in his hand, loaded it, aimed at the wooden target in front of him, fired it, and with a crisp bang, thick white smoke came out of the muzzle.

There was cheers on the beach, and it was a good sign that the first bullet made by himself would be fired, but Tang Jian was very dissatisfied, and shook his head while checking the chamber of the gun:

"The smoke is too big, and the barrel is too easy to get dirty, so it seems that the number of maintenance times will be increased in the future."

He then walked over to the target to check for penetration and deflection, but this time he didn't say anything. It seems that the self-made bullets are no different from ordinary bullets in other respects, except that the smoke is a little larger and the combustion residue is a little more. It's best that you don't have to make more adjustments when learning shooting skills.

Since then, they have made several other types of ammunition, including the 54-style pistol cartridge, the double-barreled shotgun cartridge, and the large shotgun cartridge for homemade shotguns. Among them, for the May Fourth pistol bullet, Wang Ruobin also made some changes.

He drilled a small hole in the warhead with an electric drill, dripped a drop of mercury, and then sealed it with molten lead. Seeing this process, Xu Gaogong, Xie Xi and others all looked like earth.

"Xiao Wang, do you know that the Geneva International Convention strictly prohibits the manufacture and use of dummy bullets!"

Xu Hui asked with a pale face, and Wang Ruobin looked to the side innocently. A hand reached over and took the dummy pellet from him.

"I made him do it."

Wang Haiyang, the captain of Team B, took the dummy bullet in his palm and pushed the bullet into the magazine in his hand that imitated the five or four guns with a calm face.

"Pistol cartridges don't work, and at the moment we are armed with the most pistols. That's why I asked that all the May Fourth bullets be modified to increase the lethality as much as possible. ”

"You can't use a dummy bullet either, this thing will definitely not save people! Captain Tang, look ......"

After all, he is a regular military worker, Xu Hui attaches great importance to these rules, he looks to the side with a gaze asking for help, Tang Jian has always given people the feeling that he is very principled.

However, it is obvious that the weight of the so-called international convention is completely different in the eyes of intellectuals and in the eyes of military personnel -- Tang Jian just shook his head disapprovingly.

"What are the international conventions under this environment?"

Not only Tang Jian, but also Xie Xie, Lao Ma, and even Wu Nanhai, a nerd, showed a disapproving look on his face, and the only one who supported XCMG was also an engineer and technician.

"We can not care about international conventions, but we must take into account our own safety."

Pang Yu stood up.

"Because of their weak firepower, these imitation 54 guns were distributed to personnel with no military experience. Most of us, including me, have never fired a gun in our lives, and a pistol is more of a bold. Once it's time to use a gun, the chances of hitting yourself or your allies are higher than hitting your enemies! ”

"Yes, yes, the accidental injury rate of the pistol is already high, not to mention that all the people who use the pistol now are novices, and if they are accidentally injured by a dum, they will definitely die!"

Xu Hui immediately found a breakthrough and insisted on her own opinion, while the others also fell into deep thought.

The final result of the deliberations was to suspend the damification of the May Fourth pistol bullets. But Wang Haiyang still insisted that Wang Ruobin make a few bullets, paint them with red paint, and carry them with him for later use.

"Something doesn't feel right lately, and I always think something is going to happen." Wang Haiyang explained his stubbornness like this, "My hunch has always been very accurate. ”

Wang Haiyang, a young man, is usually silent, so everyone didn't take it seriously at the time, but sure enough, just two days later, something happened

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