Landlord of the Tang Dynasty

Chapter 55 Preparing to go to Chang'an

"Hahaha..." Xu Qing came out of his "laboratory" again with a dark face. He has done eighteen experiments today, and finally mastered the process of making gunpowder.

As a later engineering student, Xu Qing is not familiar with the composition of gunpowder. The weight ratio of fire nitrate, sulfur, and charcoal is 15:2:3. If you ask again, I can give you the chemical formula.However, it is possible in theory, but it does not mean that it works in practice. After a year, there are only a few experimental classes, let alone making gunpowder.So everything has to cross the river by feeling the stones.

It turned out that Xu Qing only thought of crushing fire nitrate, sulfur, and charcoal and mixing them together in proportion, but it turned out to be smoke, mist, bomb, and there was only smoke, but no fire.It was only later that Xu Qing realized that the black gunpowder had to be granulated with egg white to ensure the best possible combustion, which was prone to explosion.

Four grams of black, fire, and powder can produce a big explosion. Xu Qing dare not use them indiscriminately, and there was no weighing device for calculating "grams" in the Tang Dynasty, which made Xu Qing very annoyed.Finally, Xu Qing made a device that could hold one liter of water, filled it with water, and then used a balance to weigh out a dry wooden block of the same weight.Then cut the wooden blocks into different sizes according to the proportion, and temporarily created a set of weight balances that can calculate grams. Although it is not very accurate, it is still easy to use.

Mix the three ingredients before granulating, then add the egg whites, stir, and shake.Xu Qing is also afraid of accidents, who can say about gunpowder?In case of a bad temper, it's not good to have disfigurement or something, I just dare to do it slowly with twelve hearts.

After the gunpowder had formed into small particles, Xu Qing weighed out [-] grams and put it into a clay pot the size of a fist.Thirty grams must not be enough to fill it up, so Xu Qing put some more cotton. The cotton can not only fill the space, but also keep it dry. Press the cotton hard to fill the clay pot.Xu Qing filled the clay pot, took out the lead wire he made, inserted it into the gunpowder, and closed the opening with a wooden stopper.The wooden plug is the kind with two halves. Before plugging the opening, you can put the lead wire inside first, and then clamp and plug the opening.

The lead wire is very long, Xu Qing has calculated that such a long length of wire is probably enough to burn for 20 seconds.This time is enough for him to rush to the back of a thick brick wall, then cover his head with a copper basin, and then use a wooden board to block his back, enough for him to fall in the middle.Although so many protective measures failed to show their effect more than a dozen times, Xu Qing still did not dare to take it lightly.

After putting away the clay pot, he immediately went back behind the wall and made his seemingly perfect preparations.Secretly counting 123 in my heart... As a result, there was no movement.Xu Qing thought to herself, luck shouldn't be so bad, she didn't even hear the noise again and again.Xu Qing didn't dare to stretch his head out to look at it. He suffered a lot when he was playing firecrackers when he was a child.Once there was a firecracker that didn't go off for a long time. Xu Qing picked it up to check, but it went off as soon as he got it.

No matter how timid I was, I dared to go out and look after waiting for 10 minutes, but it turned out that there was no ignition.

"Damn it, it's useless to check the bladder capacity this time." Xu Qing shook his head and went to ignite it again. After repeated sprinting, he hid behind the wall, covered his head with a basin, and blocked his back with a wooden plank.As soon as it was done, an unprecedented explosion sound was heard:

"boom!!!"

Xu Qing was overjoyed, and took away the copper basin, only to see a few bright light spots on the roof, and then a piece of tile, shaking and about to fall, Xu Qing quickly took the copper basin to block it again.

"Hey, this power is not bad..." Xu Qing was overjoyed, cleaned the house, and then took the remaining half catty of the gunpowder just now and planned to go out. After thinking about it, he took another kind of smoke bomb gunpowder.Pushing open the door, Xu Qing, whose hair was disheveled and whose face was half black and half white due to the smoke, laughed like an old Taoist priest who had broken through to become a god after many years of retreat.This is of course Xu Qing's own thought, and others don't think so.When Xu Qing left this small courtyard, the servants were terrified, shouting that something happened to the master,
"Hehehe, next step, let's make a pistol..." Xu Qing said cheerfully, not caring about other people's opinions.But the pistol is very complicated, and it can't be done well in a few days. Fortunately, Xu Qing used to pay attention to the structure diagram of the flintlock pistol, and even drew it when he was studying engineering drawing.

"Master, the bath water is ready..." The one who spoke was Xu Qing's maid, Xiaoying, who is now Xun Xueer's personal maid.

"Yeah, okay..." Xu Qing happily hid the gunpowder in her bosom, and then went to the bathroom to take a bath.

The autumn of August is refreshing, and it is almost the fifteenth day of August. The last time it was the fifteenth day of the eighth month, it seems that I was appointed an official, and I had a big drink at the inn with those soldiers.

In autumn, only poets are sad.The farmers are all happy, because the wheat and rice in the field are almost ripe, they will be harvested soon, and they will be ready to dry, and they will eat new rice and new noodles, a big bowl of soup cakes, steamed cakes are soft and soft, and the rice piles are pointed. , and then take out the pickled vegetables in spring and summer, and drink them deliciously for the whole family to eat, what's so unhappy about it!There is nothing better than a full stomach!
If we say that the happiest farmers are those from Xuzhuang, followed by those from Hongshan Township, the rent is low, and my family can eat freely for a few more days.

Xu Qing's smaller five-hundred-stone granary has already been built, just waiting for the grain to enter the warehouse.Because it can be half of the color, plus the loss, so the maximum charge is [-] stones, which is barely enough with the squeeze and the warehouse in Xu's mansion.The rest are used for folding colors, such as cotton cloth, fur, copper coins and so on.

Xu Qing didn't intervene in the grain collection this time, but just watched whether his system of hand-off shopkeepers was perfect and effective.After all, I am going to Chang'an, and I don't know when I will go home.

Xu Qing thought: this time I go to Chang'an, I'm afraid Li Yuan will install a real official for me, otherwise I won't let me go to Chang'an to meet him, maybe I will be sent to the north to fight the Turks, alas...

Both Li Er and Li You wanted to win over last time, but I don't know how they will plan on me when they arrive in Chang'an.Xu Qing already had the idea of ​​resigning from office and living in seclusion, being a ignorant person, and after the Xuanwu Gate change in a few years, he would make something and become a small official again.

As a time traveler, Xu Qing is not optimistic about the prince's party from the bottom of his heart, but he does not want to side with Li Shimin, and from the historical data, people on Li Shimin's side get along better.However, history is just history after all, he can reflect the truth, but those truths are hidden under layers of lies, Xu Qing still doesn't know how to choose what is best for him.But in general, it is better to act late this time, because I don’t know whether he will have an impact on history after he came to the Tang Dynasty, and whether he will change the outcome of the Xuanwu Gate Incident.

"Huh~" Xu Qing, who was in the bath, took a deep breath and buried his head in the water.

(End of this chapter)