Of course, Li Chen didn't know that China would not have the ability to refine metal zinc on a large scale until the middle of the Ming Dynasty. Pen, fun, pavilion www. biquge。 info Tiangong Kaiwu is recorded above, and the metal zinc has to be refined. And Chinese copper coins have to use brass, probably after Jiajing.

India, on the other hand, had the ability to refine zinc metal many years earlier than China. The techniques of the two sides are similar, the difference is that the Chinese style has to be on top.

To refine the metal zinc, it is necessary to put the siderite, which is called calamine in Datang, to obtain the mineral, mix carbon, and put it into an iron pot to simmer. Then, the Chinese method is to have a special condensing chamber above the jar. The siderite is simmered in it, and when it reaches its boiling point, it will be vaporized, and it will condense into metallic zinc in the condensing chamber above. The Chinese condensing chamber is at the top, and the Indian is at the bottom.

Why was the extraction of metallic zinc discovered by the Chinese so late? It is because of the characteristics of zinc metal that it is difficult for people to notice. His boiling point is 906 degrees Celsius. The reduction point is 904 degrees Celsius, which is only a little bit worse.

But that's a little bit of trouble. Once it flies into the air, it combines with carbon dioxide and becomes zinc carbonate, which is the white powder. It's easy to overlook. Therefore, to refine the metal zinc, the coin needs to be re-enclosed in a closed environment,

Li Chen once considered whether to issue brass coins, but it was still the same old problem, copper production could not go up, and Datang's demand for copper coins was too large. Now that he has switched to this method, he can produce about 1.5 million yuan a year, which is already the output of Datang for ten years. However, this number is not as good as that of the Song Dynasty.

The output of copper coins is not daring, mainly because the output of copper cannot catch up, and even if brass coins are produced, there is no way to improve this method. Therefore, before the copper production comes up, it can only be so unconscionable.

Yield, Li Chen, who has a little leisure today, is in a daze in the Hanliang Palace, looking at the floating clouds in the sky, looking at the lake, suddenly a little bored, and I don't want to go out hunting, I don't want to read, I don't want to watch a play, I don't want to think a lot, but I found that I can only be in a daze.

Output..., Li Chen thought about the issue of output. For the production of the Datang mine, he proposed two methods, one is to improve the pumping equipment, so that it should be possible to dig deeper, I hope they don't forget to do a good job of support, and also, digging deeper, it means that the oxygen will be insufficient, maybe they should be asked to prepare two pipes, one to pump in, and the other to pump out.

There's also the rail car, and I don't know what happened to them. Li Chen originally wanted to find the waiter of the Ministry of Industry for questioning, but after thinking about it, he only sent someone to pass it on and asked him to sort out the progress and write it into a chapter.

"Let's just go out of the palace and have fun." Li Chen suddenly thought of a fun thing, that is, a visit to Weifu. This is a super slap in the face.

I used to watch pigtail dramas, and I loved to watch this kind of plot, the emperor went out to visit in micro-clothes, explored the people's feelings, and met a big villain, wrong, that kind of villain is a small villain at most. The difference is that the villain will appear many times, and if the protagonist does not die, the villain will not die. And the little villain will simply disappear when he comes out to be taught a lesson by the protagonist and the hero.

Well, it's cool to think about it now, how did the emperor be a little villain, he was oppressed and bullied, and he also found out the people's feelings, and then, he turned into a person, dangdang, **** became gold.

It's wrong again, what is the **** of the good end, it should be said, when it is dang, the beggar becomes the emperor. Then the little villains were scared stupid, they died of refreshment, and the people were happy. Do you dare to slap the emperor in the face? Have you written a suicide note?

Of course, there are also very vain gains. The author didn't know who it was, but the book was in good shape, and he remembered it as a red-skinned hardcover. It's a pity that the content is really stupid, talking about Qianlong's private interview, and then how to punish the evil thing.

Where's the stupidity? First of all, he didn't like Qianlong. can like Kangxi, like Yongzheng, for Qianlong, he has no good feelings, he feels like a loser, a person who is so happy. Secondly, the villains are Fang Shiyu and Hong Xiguan, which disgusts him even more.

These are all okay, what makes him feel the most stupid is that Qianlong encounters corrupt officials every time, this is normal, it is abnormal, how can he punish them? It's not about collecting evidence and revealing your identity, but just doing it.

For example, once, he was taken to court with an arrogant attitude, it doesn't matter, he was originally the emperor, and it is nothing to be arrogant. But he often didn't reveal his identity, so he relied on his skills to mess up the court, beat the county palace, and beat the court?

Of course, ordinary people will be in trouble if they do this, but who is he? Qianlong, when today's son. If you are afraid of trouble, you can naturally mess around at will.

Truth be told, this kind of behavior is brain-dead. Horseman-like behavior, just find two chivalrous people, he dares to do it. A hero does this, and it also makes people think that he is not afraid of power and justice. An emperor doing this only makes him feel brain-dead.

The emperor did this, and it didn't make people feel good at all. It's a sense of disobedience, he is simply messing around with his identity, wanting to say that no one dares to do anything to him. Secondly, it clashes with his identity.

In the TV series, Kangxi Weifu has a private interview, and in the end, his identity will be revealed, and the villain will be punished. And that book got Qianlong, every time he didn't reveal his identity, he relied on force. If you don't reveal your identity, God knows who you are, if everyone was like him, relying on a little effort and acting recklessly, the world would have been in chaos a long time ago.

Kangxi is maintaining order, and Qianlong is destroying order. It's not wrong to disrupt order, otherwise there wouldn't be so many legends of thieves and righteous thieves.

No, this doesn't fit the character's identity. A great hero can do this, but an emperor can't. The hero has no legal and legal way to maintain order, and has to destroy, in essence, he has to maintain order. But can't the emperor help it?

It's easier to understand, let's say a judge, he has a behind-the-scenes identity, he is a superhero, and he will punish criminals who cannot be convicted. Sounds like a good guy and a decent person. But what would you think if he acquitted the gangsters every time and then killed those people in private?

Obviously he could be found guilty, but he also acquitted him, and every time, and then turned around and went to kill the gangster. On the one hand, to destroy the people's confidence in the court, and on the other hand, to punish the evil and eliminate the evil? This person is either brain-dead or has other intentions.

Without further ado, Li Chen was ready. Su Xiaoxiao wanted to follow, but was blocked, "You give me some peace, hold your stomach, and dare to run around for me." ’。

As a result, Su Xiaoxiao could only grit her teeth and watch Li Chen leave the palace freely. I didn't have children before, she wanted children, but now that she has them, she really finds that it's troublesome, this can't be eaten, that can't be done, and she has to hold on to a bigger and bigger belly, and her back hurts every day.

Li Chen took the guards and quietly left the palace under their protection. Since there are no bad intentions, and they are not brain-dead, and they don't have the kind of skills that pick a lot, or the mentality of picking a lot, of course the guards must be brought. Otherwise, at the foot of Chang'an, I don't know how many second generations of officials, second generations of power, and second generations of rich, maybe as soon as his brain is hot, he will come out of the front and back, and the white knife will go in and the red knife will come out, and he will really not be able to cry.

'Where is this going?' Li Chen only thought at this time, he didn't think of where to go, "Just go to Chang'an Theater and have a look." He hasn't seen this theater since it was completed. Only seen sketches.

There were sketches in the Tang Dynasty? He taught it. Although he hasn't learned it either, but this kind of thing, what's so difficult about the principle, haven't you ever eaten pork, haven't you seen a bead walking? Anyway, just take charcoal and draw it as it is, the more similar the better, pay attention to the shadows or something, and it's fine. As soon as he said go, Li Chen took a group of guards to Chang'an Theater.

Chang'an Opera Park is located in Jing'an Fang. I will choose this side because it is close to the south of the city, although it is still separated by several miles, which is the south city wall of Chang'an, but it can be regarded as very close.

Close to the south of the city, the place is relatively large. Then, there were several temples in his vicinity. Well, there were originally several temples. For example, next to Jingshanfang, there is Daxingshan Temple. This temple also has a long history, built in Jin, originally called Zunshan Temple. It was expanded in the second year of the emperor and renamed Daxingshan Temple.

Not only has a long history, there were once monks from Tianzhude, who translated scriptures here, and there were several monks in the Kaiyuan period, known as the three great scholars of the Kaiyuan Dynasty, who preached the Dharma and taught Tantra here, becoming the birthplace of Chinese Tantra. To the southeast is Chongji Temple, and then to the south, there is the Temple of Mercy and Grace, the famous Big Wild Goose Pagoda, which is here.

Chang'an Theater is opened here, which can effectively attract customers. Let the audience who used to come here to several large temples and theaters can change here. The only thing to note is that, unlike the previous two temples, the Temple of Mercy and Grace survived the destruction of the Buddha, and after Li Chen ascended the throne, it quickly recovered.

Because he wanted to pay a private visit to Weifu, Li Chen went out from Zuoyintai Gate, bypassed the Forbidden Garden, went around a big circle, and quietly entered the city from Yanxing Gate.

The scenery of this Yanxing Gate is good, Li Chen likes to enter Chang'an from this gate, after entering the door, the terrain will slowly rise, and then lower, you can also look at Chang'an from this side, Li Chen stopped for a while, and left, so as not to block the people behind.

He walked along the newly paved stone path. Along the road, you can hear people saying that the newly paved stone road in Chang'an is also smooth and easy to walk. Li Chen wanted to say that this is not just a stone road, this is a cement road. It is made of cement to make a slate and pave the road.

The cement plant, which has been built and is still expanding, is built on the banks of the Wei River, using water power to crush raw materials. Cement kilns also need to rely on water wheels to propel blowers.

At present, the cement has not been sold to the outside world for the time being, and most of the cement produced at present has been hoarded in addition to paving the road surface of Chang'an.

Not many people in Datang know how to use this at present. The Ministry of Industry expects that it will take a while to experiment before it can be promoted to the outside world. It just so happened that Li Chende's plan had not yet begun. When it is launched, a large amount of cement must be consumed, and there is no need to worry about sales.

Just thinking about it, Li Chen inadvertently collided with someone. (To be continued.) )