Qingyi Annex, another open-air hot spring facing the lake.

Zhao Hao and Li Chengen, as well as Zhao Shizhen, who rushed from the research institute after hearing the news, are also in the soup.

The scene here is much more bold, Li Chengen and Xiwa are drinking three white wines, and they are dancing with their naked hands.

The main thing is that Li Chengen is bragging about his fruitful results when hunting in Nanhaizi.

According to the little lord, his results included but not limited to more than 200 wolves, more than 100 bears, 30 tigers, 6 elephants, and more than 1,000 rabbits......

Xiwa was convinced of this, shouted that the little lord was invincible, and kept asking Li Chengen, is the elephant's trunk really that long?

It's no wonder that Lee Seung-eun likes to play with him so much.

Zhao Hao and Zhao Shizhen sat on the other side of the bath, drinking Biluochun while whispering business.

No way, inventors are all workaholics, and Zhao Shizhen came to report to Zhao Gongzi.

"Uncle, the Longqing style has been finalized, and the paper shell fixed ammunition has also been studied." Zhao Shizhen said as if conjuring, and handed Zhao Hao a candy-like bullet.

Zhao Hao's eyes widened, and he looked Zhao Shizhen up and down, only to see that this kid was naked all over his body, and he didn't know where he took out this bullet.

Zhao Gongzi was a little suspicious and used the bamboo tweezers to hold the tea cup, took the paper bullet, and looked at it through the light.

I saw that it was about the same length as a person's index finger, and the whole was wrapped in a paper shell, with one tip and one thick end.

"When you use it, you just need to bite the tip of the bullet with your teeth and pour the gunpowder inside into the fire pool. The projectile was in the middle of the paper shell, blocking the rest of the gunpowder and not pouring out. Zhao Shizhen explained as if offering a treasure:

Then close the fire door and stuff the remaining gunpowder and projectiles into the barrel with a strip. We've tried, and after switching to this bullet, we can shoot three solid shots a minute. ”

The institute has long used Taixi clocks from Macau, so naturally it also has the concept of minutes.

"That's not bad." Zhao Hao calculated slightly, if this gun reached the hands of the Qi family's army, it should be able to shoot a dense enough rain of bullets, even in the face of the cavalry charge, it was no longer weak.

With a bayonet, it can basically meet the requirements of Zhang Idol. Zhao Haoxin said that if he goes to Beijing to see him next year, he will not worry about the meeting gift.

"That's right, uncle, my rear-loading son-and-mother gun," seeing his uncle's approval, Zhao Shizhen said boldly: "I'll name it Xunleigong." ”

"Thunderbolt." Hearing this name that is of great significance to otaku, Zhao Hao silently took a sip of tea, and praised it for a long time: "Good name, but unfortunately there is no magnetic chain, and it still can't be rushed after all." ”

"Uh, magnetic chains?" Zhao Shizhen asked curiously, "What kind of device is that?" ”

"When I didn't say it." Zhao Gongzi shook his head, hey, in the era when the teachers were not born yet, Xunlei had a fart.

"......" Fortunately, Zhao Shizhen often heard some brainless new words from his uncle's mouth, and he was not surprised for a long time. He turned his attention back to the thunderbolt in his heart and said: "My nephew tried a sample gun, and it was indeed as my uncle said, the air leakage was terrible, and the bullet could not shoot thirty steps. ”

"Of course." Zhao Hao said lightly: "The superiority of the rear-loading gun is great, but unfortunately this one will be sentenced to death." ”

"No, uncle, I have thought of a solution." Zhao Shizhen sat up straight and said excitedly: "That's what my uncle once said - vigorously produce miracles!" ”

"Oh?" Zhao Gongzi's expression was suffocated, and he was in awe, and secretly said that he was a man who was determined to capture Ah Shi alive, and he really wanted to create a miracle?

"Since the air leak can't be solved, then I will increase the power of gunpowder, and I can also shoot the bullet far!" The gun-making maniacs shouted, "So I increased the charge!" ”

"And then?" Zhao Hao's face was full of anticipation.

"Then it blew up...... Zhao Shizhen lowered his face and said: "Fortunately, my nephew guarded against this hand and used the extended trigger, otherwise he would have to blow up his finger." ”

"......" A bright tea soup flowed down the corner of Zhao Gongzi's mouth.

"So uncle, for the sake of today, there is only one last way!" Zhao Shizhen looked at Zhao Hao with blazing eyes, and said with a dagger: "You said that nitrocellulose ...... last time"

"You're stupid, aren't you? Black powder can explode the chamber, but the nitrocellulose will not explode? Zhao Hao slapped him on the head. You'd better honestly figure out a way to get steelmaking up first! ”

"My nephew has estimated that even if it is changed to a steel barrel, if you want the Thunderbolt to hit two hundred steps, you have to make the barrel as thick as a small arm." Zhao Shizhen still didn't give up and said: "Is that a gun or a cannon?" So uncle, you still need more powerful gunpowder......"

"No, absolutely not, that thing is too unstable, it will kill you......" Zhao Hao shook his head categorically when he heard this, he originally wanted to 'who made me a gun', but he felt too unkind, so he changed his words: "I will feel distressed." ”

"Uncle......" The orphan Zhao Shizhen's eyes were filled with tears when he was moved, and he looked at the little uncle who was as big as him with a look of admiration and said, "Just once, promise my nephew once." ”

"If you say no, you can't." Zhao Hao knocked him on the head hard, and said in a deep voice:

"I've told you many times that the reason why you don't pass on the course of "Chemistry" is because you are too impatient and too bold! If you talk nonsense with me again, go to Kunshan to study honestly, and don't think about going back to the graduate school! ”

"Oh, I know, uncle......" Zhao Shizhen was like a deflated ball, and there was nothing in the world that threatened him more than this.

Seeing that he was battered, Zhao Hao sighed and said:

"You have to learn to be patient, science is like that, the emergence of an invention and its practical application require a long period of trial and error. You must do it step by step, and don't be impatient. ”

"Understood, uncle." Zhao Shizhen nodded busily.

In fact, Zhao Hao's words are half-true. Half of the truth is that this is a universal law that lies between invention and application. Nitrocellulose eventually becomes smokeless gunpowder, and it does take a long time to test.

Half of the hypothesis is that Zhao Hao knows how to prepare smokeless gunpowder, so there is basically no need for repeated trial and error.

First, soak the cotton linter with a mixture of sulfuric acid and nitric acid, and then take out the cotton and wash it to dry.

Then distillation with sulfuric acid and alcohol to prepare ether, use ether and alcohol mixture to dissolve nitrocellulose, and then add camphor as a stabilizer to make solids, solid after tableting and division into granules, it is made into smokeless gunpowder with two to three times the power of black powder.

Well, don't talk about ether, Zhao Hao hasn't even started to prepare nitric acid sulfate yet.

But pyrite has been found on Xishan Island, and with pyrite, will sulfuric acid be far away? With sulfuric acid, will nitric acid be far away?

Zhao Hao is confident that he will overcome all difficulties within three or four years and meet all the conditions for the preparation of smokeless gunpowder.

And Zhao Shizhen's genius intuition is right, it was the birth of smokeless gunpowder that allowed the rear-loading gun to replace the front-loading gun.

But the problem is that Zhao Gongzi has already made up his mind, even if all the conditions have been met, he will not tell the disciples the formula of smokeless gunpowder.

ps. This chapter is still owed.