"Bang !!" A gunshot rang out, and the bullet passed through a distance of more than ten meters and shot through the thin wooden board that was erected, and Zhang Zhen's hanging heart was also put down.

The most important thing about firearms is the barrel and bullets, the barrel is easy for Zhang Zhen, he knows the principle of making, and even the rifling is pulled out.

Bullets are different.

This is a firing pin gun, don't look at this pin gun has only existed for 40 years, and it has only been a decade or so that it has dominated the battlefield and has been replaced by modern firearms.

Compared with the flintlock pistol for more than 200 years, although the time is far behind, it was ridiculed by countless people when it was first invented, but it is only the more modern it is, with the development of science and technology, the faster the upgrading of firearms.

But this replacement has withstood the test of the battlefield, only one battle of Prussia and Austria made the whole of Europe redress, at that time, Prussia and Austria, the combined strength of a million troops, as a result, the war only lasted seven weeks and ended in a crushing defeat for Austria, then the efficiency and practicality of the reload can be imagined.

It was also the advent of the firing pin gun that opened the curtain of modern warfare.

The bullet of Zhang Zhen's firing pin gun, the conical lead bullet is polished after casting the mold made by himself, and the melting point of the lead is only 328 degrees, and the candle flame can be burned, let alone gas welding.

Gunpowder is also simple, there are fireworks in the industrial park, modern fireworks and ancient gunpowder are almost the same, because of the difference in the proportion of the formula, some even have more power.

The key is in the primer.

In terms of characteristics, gunpowder belongs to the high flame sensitivity, low impact sensitivity, and the primer of the firing pin gun must be something with extremely high impact sensitivity to ensure the firing rate.

Thundermercury fire cap or something is unrealistic, Zhang Zhen is not a chemistry major, there are no raw materials, no processing methods, even if you know the name, you can't make it, so you can only start with the existing items in Daming.

Remembering that black powder was invented by alchemists in China, Zhang Zhen deliberately looked through the medical books of the time, and after repeated speculation, he finally selected red nitrate and sulfur as the primer, the key is that the effect is not bad.

Nanyang is thousands of miles away from the north and south of Kyoto, it is the far away of the Tiangao Emperor, where is it worth the people of Jinyiwei and Dongchang in a small town?

When the matter of the mirror spread, finally after the prince sacrificed to the lake, another team of factory guards came to Nanyang.

In this Nanyang, the prince was forced to leave, the celebrant was disgraced, who from top to bottom in this factory guard did not stay awkward?

With Yang Hanlin maneuvering around, and Zhang Zhen usually keeping a low profile, this mirror matter involved countless business travelers, and the matter was finally closed after a month of inconclusive investigation.

How could they guess that Zhang Zhen never went out at night because he was busy with research and development in the industrial park.

They couldn't even guess that Yang Hanlin, the chief criminal investigator in the official mansion, turned out to be a spy, and he got the red nitrate and sulfur with several prescriptions.

And Jinyiwei and Dongchang are calm, but Liangjing is really not calm.

There is a folk legend gradually, saying that there is a kind of glass mirror in the fireworks lane of the capital or on the bank of the Qinhuai River in Jinling, which shines on people, and the cilia are all visible, which is a hundred times clearer than the bronze mirror.

The reaction to this incident was also very strange, even if the wives and daughters of those rich businessmen heard the news, all the rich businessmen basically spoke in unison, saying that it was a false rumor.

If you don't lie, you can't do it! I heard that the small mirror was as high as 3,000 taels when it was purchased in Nanyang, and when it arrived in Jingshi and Jinling, it soared to tens of thousands of taels of silver in a blink of an eye, and it was still a sky-high price every day, and it was still the kind with no price.

Lying is lying, the wealthy merchants, nobles, and high-ranking officials in the two cities are all asking for treasure mirrors with a lot of money, and it is not that the Oiran everywhere holds his own value, and it is difficult for money to impress him to commit to himself.

I heard that there was a high-roller who bought a treasure mirror in Nanyang, and when he arrived in Beijing, he gave it to a beautiful woman, and became a guest of the scene.

And after those Qinglou women heard about it, they asked the regular customers about the glass mirror, and their words were sincere and their eyes were burning, which was quite imperative, and it made all the guests feel good.

And then it developed into someone who has not been given a treasure mirror, and he deserves the name of Oiran.

Until there were ten days left for the New Year, the strange goods couldn't help but make a move, and the last glass mirror was sold at a sky-high price of 53,000 taels.

Later, according to the statistics of good deeds, Jingshi accounted for eight of the ten glass mirrors that flowed out of Nanyang Town, and said that two of them were bought by the eunuch of the imperial superintendent, and it is estimated that they were dedicated to the queen concubine.

A piece was bought by a big merchant in Jindi and taken directly out of the capital to return to his hometown.

Two of them were purchased by officials and given to their wives and concubines.

The remaining three pieces were all entered into the three largest houses in Hualiu Lane as the treasures of the town hall.

The strange thing is that there are also three pieces in Jinling, which are in the hands of Li Xiangjun, Chen Yuanyuan, and Bian Yujing of Qin Huai Bayan.

How can there be one more of ten mirrors, there are different versions of this, and because of this mirror, the gap between the Oiran of the North and South Beijing is also revealed, according to later generations, the Oiran of Jinling has more autonomy.

And this treasure mirror is rare, the beauty competes for the public, quite has the charm of the two peaches killing the three soldiers, and there are many people who are dissatisfied with the Jinling Zhongyan, and the most famous one is Gu Hengbo in Qinhuai Bayan.

This Gu Hengbo is talented and beautiful, known as the 'first in Nanqu' poetry and painting, the most favored by talented people and celebrities, many literary banquets in the south of the Yangtze River, every time Gu Hengbo is absent as a pity, which can be seen its influence.

There is also an elegant thing about her, saying that it is the science of science Huang Daozhou every time he prides himself on 'having a prostitute in his eyes and no prostitute in his heart', and the members of Donglin invite Hengbo to go to the bed to see if he has the ability to go to the willow Hui.

Such a person, Wen Zhibao Mirror already has its own owner, naturally unwilling, went to Bian Yujing to see, and then went to Li Xiangjun to squeeze with poetry, which is a big fuss.

It's a pity that this mirror is gone after all, I have made trouble and cried, this Gu Hengbo is afraid that he is also a little disheartened, and there are rumors that he is going to get married, and I don't know whether it is true or not.

Originally, the Meilou was like a market banquet, and with this rumor, it was a wild gathering of talented people and celebrities, and it seemed that they all wanted to hug the beauty, and they didn't go home for many years.

It is also because of these that many people also know about Zhang Zhen's existence, and they are glad that he sells fewer mirrors, if there are more, I am afraid that I will have to break the bank, where can the beauty be tired of the party and want to find a home?

The two treasure mirrors purchased by Aunt Feng were also bought at a high price of 30,000 taels of silver, and the Qing'er girl in Nanyang Jinfeng Building was also empty and happy, and the whole Layue was depressed.

This treasure mirror was bought for five times the price, and this matter also spread along with the anecdote of the competition between the two capitals, and soon reached the ears of Xia Zhongyong and his family.

Fifteen thousand taels of silver? It must be more than this price to get to the capital!

After more than ten years of lack of food, the husband and wife are beating wildly at this time.

Soon, the two of them still broke off the idea of selling, even though the lord had made it clear that this mirror belonged to the two of them.

Of course, the excitement is inevitable.