The breath of early spring is gradually diffused, the cold of the harsh winter is slowly gone, and the world that was originally covered in silver for half a month, under the soothing of the scorching sun, retreats the snow-white old clothes, like a beautiful woman in the bath to reveal her crystal clear skin.

The wet ground, the hurried people, the busy line, and the warm light reveal everyone's desire for spring.

Chen Jiu strolled through the noisy manufacturing workshop, facing the heat of the sky, there was an orderly explosives production workshop, and the wind was light.

Located on the outskirts of Zhenshoufu City, covering an area of more than 500 acres, surrounded by mountains, there is only one straight road to the outside world, a natural place that is easy to defend and difficult to attack, and is a secret base arranged by the family to make explosives for Chen Jiu.

In view of the importance of the explosives workshop, at the beginning of the site, Chen Jiu sought support from the cheap daddy. Chen Ba attached great importance to it, and sent the palace guards and shadow guards to guard them heavily and protect them strictly.

The craftsmen moved their families and lived in the workshop settlement, and it was strictly forbidden to go out, and those who entered and left the workshop were strictly checked and guarded.

At this moment, the workshop is full of people, the craftsmen perform their duties, a busy scene, the craftsmen did not stop their work because of Chen Jiu's arrival, this scene is Chen Jiu's repeated emphasis for half a month, and the final effect.

He still remembers the tragedy caused by the improper operation of the craftsman half a month ago, when he was leading Xuan Yi and Xuan Guang to teach everyone how to refine saltpeter.

One of the craftsmen used too much force, causing the raw materials he was grinding and preparing to spontaneously combust and almost explode, although he extinguished the burning gunpowder in time, he was still burned and seriously injured, and Chen Jiu, who was present, was also shocked into a cold sweat.

I'm scared!

It was a gunpowder field, even if it was a low-intensity black gunpowder, thousands of catties of black gunpowder could be detonated together, and even if it was a Daluo immortal, there would be no bones left.

After criticizing Xuanyi, Xuanguang and many craftsmen on the spot, and arranging timely treatment for the perpetrators, Chen Jiu popularized and taught everyone safety production, safety precautions and methods on the spot.

At this time, Xuan Yi and Xuan Guang followed suit at this moment, following behind Chen Jiu, ready to listen to his words and deeds at any time, and the half-moon experience made them admire their young master even more, and even had a sense of looking up.

Gunpowder is not only a way to make fireworks!

Chen Jiu upgraded the gunpowder formula: using natural animal fat to refine glycerin, using saltpeter to dissolve nitric acid, using sulfur to dissolve sulfuric acid, synthesizing nitrate, glycerine, and then using diatomaceous earth as an adsorption stabilizer to make yellow explosives with stable performance.

Xuan Yi and Xuan Guang got the formula given by Chen Jiu, and conducted repeated experiments and demonstrations on the synthesis process, material ratio, and production process of explosives, and finally produced a kind of yellow explosive with stable performance and great power of nitrate, glycerine, and oil.

After making stable gunpowder, Chen Jiu put the production of grenades on the agenda.

Grenades - the world's biggest killer!

Under the guidance of Chen Jiu, Xuan Yi and Xuan Guang seemed to open the door to a new world, and they fully cooperated, forgetting to sleep and eating, so that Chen Jiu's grenade production road was smooth and abnormal.

Chen Jiu is rich in theory, but his hands-on ability is too poor!

You can only rely on the professionals!

The grenade mainly relies on the high-speed scattering of the fragments of the shell assembly to kill the enemy, and Chen Jiu improved and simplified it according to the production process of the grenade in the previous life to make a new type of grenade.

The grenade designed by Chen Jiu: the body part of the projectile is all cast iron, with yellow explosives inside, and an external detonation bracelet.

When facing the enemy, unscrew the protective cover, put the pull ring on your finger, and throw the grenade hard.

It's easy and convenient!

After the verification of Xuan Yi and Xuan Guang, Chen's grenade has a special copper wire built, and when this copper wire is pulled out, it rubs against the gunpowder, igniting the gunpowder to produce a flame and igniting the fuse.

After a delay of a few seconds, the fuse ignites the explosive primer at the other end of the firing tube, and when the primer explodes, it completely detonates a large amount of yellow explosive filled in the projectile body, and the explosion causes iron fragments to shoot in all directions, killing and injuring the enemy.

The experiment began on the day the grenade was manufactured, and Chen Jiu was pale with bloodshot eyes, but Xuan Yi and Xuanguang, who were still excited, invited to the test site.

"Ninth Young Master, this is a grenade developed, the actual effect of the first experiment, you see...... Do you want to do it now?"

Xuan leaned at his hands and pointed to the desk covered with sandbags around him, and he looked fixedly at the grenades of this experiment being placed on the desk, eager to try.

Chen Jiu played with the grenade, it was oval, he could just hold it with one hand, the top protruded more than an inch, the inner buckle pull loop, his whole body was dark, covered with concave and convex regular lines.

At first glance, it's bland!

"I wonder how powerful it is?"

Chen Jiu had doubts, but he was still quite excited, if the experiment was successful, it would be equivalent to having more capital to settle down in this world, and this trial in the alien region, Chen Jiu was also more sure to retreat.

"Xuan Yi, it seems that you can't wait, the debut of the grenade is up to you to start!" Chen Jiu gently put down the grenade, and when he saw the anxious Xuan Yi, he laughed for a while.

"Please young master move to the security barrier!" Although Xuan Yi was eager to verify the power of the grenade, considering the possible danger, he respectfully asked Chen Jiu to leave.

"Xuan Yi, you are my right-hand man, pay attention to safety!" Chen Jiu patted Qian Xuanyi's shoulder, feeling that he had been thinner recently, Zhengse reminded.

"Young Master...... Rest assured!"

Xuan Yi's heart throbbed, and then he firmly picked up the experimental grenade and watched Chen Jiu and the others reach the safety barrier.

One-handed clenching, finger hook and loop, vigorous throwing, and rapid lying down, Xuan Yi standard demonstration of Chen Jiu's reminder of the experimental grenade steps. The grenade dragged a long tail of smoke and rushed towards the target.

"Bang!"

Like the sound of Thor, ten zhang away, the firelight flashed, the smoke dispersed, and the humanoid clay figurine shooting range used for the experiment was blown up and scattered in all directions.

Chen Jiu and others rushed to the scene of the explosion, only to see that the ground of the shooting range was directly blasted out of a large blackened hole, and the clay figures distributed around were covered with scars, and the iron pieces penetrated deep into the body, and the clay figures near the center of the explosion were blown apart and scattered everywhere.

The power of the grenade is amazing!

Chen Jiu silently calculated that the effective killing area of the grenade was about the size of a square circle, and the explosion effect of the first experiment far exceeded his expectations.

Chen Jiu then asked with concern, "What is the daily output of grenades now?"

"Young Master Hui, at present, the grenade is in the preliminary stage, and the production is not high for the time being, and now a total of thirty pieces have been made. ”

"My brother and I divided the 500 craftsmen into several groups, and each group only corresponded to one link for production, which was not only for secrecy but also to improve production efficiency, and it is expected that the daily output will reach about 200 pieces in the future. ”

"We will continue to improve the production process in the future, and the output can continue to increase, if we send more manpower and enter the streamlining operation, we will produce 10,000 pieces per day, no problem!" Xuan Yi replied with the same excitement.

"Okay! Very good! Xuan Yi and Xuanguang, you are really geniuses! Give you the first credit, each of them will be given a thousand acres of fertile land, 10,000 taels of gold, and 10 beautiful people! Hahaha......" Chen Jiu became excited, and he had one more thing to live in this world.

It's a big killer!

With a grenade in hand, I have it in the world!

If the grenade doesn't come out, who will compete?

"Thank you Young Master for your reward! Thanks to the young master's guidance, I don't dare to take credit!" Xuan Yi and Xuan Guang replied respectfully.

Follow me Chen Jiu, and the glory and wealth will definitely be at your fingertips in the future, and it is also expected to be a marquis and pay homage to the prime minister!"

Chen Jiu was full of pride and gave a promise.