Of course, the prerequisite for this is that the yellow explosives can be detonated.

The normal yellow explosive, which was named Taiping explosive by Emperor Chongzhen, is essentially different from nitroglycerin, that is, it is very stable. When stabilized to the point of destroying expired yellow explosives, they can be ignited and burned without exploding.

If Emperor Chongzhen was not a traverser, but only relied on Princess Taiping and his wife to figure it out, it is estimated that the explosives that can really be used will be invented in this life.

But Emperor Chongzhen is a traverser, and this Taiping explosive was invented under his guidance.

"Father, this ...... This Taiping explosive, burned with fire and ignited with black powder, will not explode, and it will not have the same power as the nitroglycerin before. Princess Taiping was in the laboratory of the princess's mansion at this time, looked at her husband with a bitter face, and then said to Emperor Chongzhen.

After finishing speaking, the two of them looked at each other with a little expectation. I hope that Emperor Chongzhen can solve their problems. It is also for this reason that Princess Taiping ran excitedly to greet the emperor, and while reporting the good news as soon as possible, she wanted to ask how to solve the next difficulties.

It's just that I didn't expect that the explosive that Emperor Chongzhen gave her directly was named after her title. Then Princess Taiping didn't have time to throw out the question, but she was robbed of the topic by her mother and the prince's brother.

After waiting for two days, just when the couple wanted to enter the palace to meet Emperor Chongzhen, Emperor Chongzhen himself came over.

"It's not difficult, you can invent something that can detonate this Taiping explosive." Emperor Chongzhen said this with a smile, and when he saw that the faces of the two of them became more expectant, he didn't appet them, and said to them, "You can try to synthesize them with acids and mercury and other things, and you should have a harvest." ”

No way, when he was in later life, he only knew about the detonator, alias mercury thunderate. Other than that, I don't know. Therefore, only so much can be said.

But in the eyes of Princess Taiping and the concubine, they thought that Emperor Chongzhen was testing them. If you tell them all directly, then what do you need them to do, and go directly to the military bureau to produce.

Putting this new type of explosive in the name of their husband and wife, training them, and allowing them to obtain the name of inventing a new type of explosive, is like the reason that the father put the steam engine in the name of the prince.

The so-called point is not broken, most of the content has already been said, and the rest has to be pondered by yourself, isn't this the practice of famous teachers and disciples!

Princess Taiping and his wife heard Emperor Chongzhen's guidance, glanced at each other with smiles, and both thanked each other, and then happily went back to do the experiment.

Watching them leave, Emperor Chongzhen actually had no bottom in his heart. Because he only knows acid and mercury, as for what acid, what other raw materials are added, or simply nothing, and what is the composition in the period, he really does not know anything.

If it's just to pretend to be forced, Emperor Chongzhen really doesn't want to pretend to be this. As soon as they cross over and get these things out directly, no matter how fierce the Jianyu is, they will definitely beat them.

But after all, it was in this ancient period that the best craftsmen and the smartest Ming people in the country were recruited, and it took nearly 20 years to get the preliminary results. Climbing the tech tree is not so easy!

After learning from the eavesdropping system that Princess Taiping and his wife had obtained stable yellow explosives, Emperor Chongzhen rushed back as soon as possible, and the main purpose was actually to instruct them to invent thundermercury, so as to perfect the new explosives.

In this way, you can kill a lot of Ming soldiers less, directly beat the whole of Europe, and ravage it casually. Of course, it will also become very easy to open mountain roads, build bridges when encountering water, etc. The development of Daming will be more ever-changing!

Now that Princess Taiping has continued to be busy, Emperor Chongzhen has temporarily left it behind, and went to the power plant to guide the prince's invention.

Progress on the Prince's side is relatively slow, and there are two important difficulties to solve. One is that the storage of electricity is a problem; Second, the long-distance transmission of electricity is a problem.

"Father, the sons asked the craftsmen to pull out the copper wire of the same thickness as much as possible. However, after the distance is long, it still can't be done. Zhu Cihong faced Emperor Chongzhen and said worriedly.

In fact, even if you pull out a copper wire of the same thickness, you don't know how many hairs he has grayed. This one is so hard!

The rubber trees mentioned by Emperor Chongzhen before already have them on the Ming side. It was sent by the Portuguese from South America last time, and some of them were transplanted over there in the South Seas.

Emperor Chongzhen knew about this problem, so he said to him: "In this case, I will tell you about the common sense of high-voltage transmission current in physics......

Hearing this, Zhu Cihong was speechless. Thought: Father, it is common sense for you, but for us, it is really not common sense!

Although he thought so in his heart, he and the most important craftsmen immediately respectfully took out a pen and paper and began to listen to Emperor Chongzhen's lecture.

"Any wire has resistance, so the current passing through any wire generates heat, resulting in a loss of power. If the current is low, the heat generation of the wire will be smaller, which can reduce the loss of electrical energy by the transmission line. Under the premise that the electric power is constant, the voltage is increased, that is, the current is reduced, so that ......"

Listening to Emperor Chongzhen talking, Zhu Cihong asked questions from time to time to learn his physics knowledge. Before I knew it, an hour had passed.

Emperor Chongzhen saw that he was almost done, so he explained to Zhu Cihong: "If you want to go further in electricity, you have to learn more about physics." These days, I will still be coming up with some follow-up advanced knowledge, and you have to study it seriously. ”

When Zhu Cihong heard this, his face showed shame, and he hurriedly agreed.

Just when Emperor Chongzhen continued to write the content of mathematics, physics and chemistry to further the scientific level of the Ming Dynasty, Sun Chuanting returned to Beijing.

In any case, he has laid down such a large territory for the Ming Dynasty, and he has not come back for nearly ten years, which is a big credit. Therefore, Emperor Chongzhen ordered the cabinet assistants and hundreds of civil and military officials to meet him.

At this time, Sun Chuanting was already sixty-seven years old. When he landed from Tianjin Port, he saw that Tianjin City, which he could only lead a few thousand men and horses to ambush back then, had become extremely huge. The prosperity of the port shocked him even more.

Subsequently, when he was welcomed to the railway station by Tianjin officials and took the train to Beijing, he realized that Zheng Zhilong was not exaggerating at all what he said.

"Your Excellency the Governor, the last general thinks that if you return to the Ming Dynasty, you will definitely not be able to recognize it. Our Da Ming, it's just changing with each passing day, not to mention that the Governor has been away for nearly ten years, even if he has been away for three years, there will be a big change! ”

Thinking back to what Zheng Zhilong introduced before, Sun Chuanting was unimpressed at the time. There must be changes, after all, the country and the people are safe, there is a wise and martial saint in power, and the people are healthy and prosperous. But if you say that you can't even recognize him, he doesn't believe him.

However, this train under the ass is very fresh, and I have never seen it before. Sit steadily on the train, roll up the curtains of the windows, drink tea, and watch the scenery pass outside. How has such a leisurely journey ever been before?

And what I saw all the way over, there was laughter and laughter everywhere, people working, and children playing, which made Sun Chuanting feel very trance. At the beginning, it was also on this land that the army of 200,000 Jianyu raged, burned down an unknown number of towns, robbed an unknown number of property, and everywhere as far as the eye could see, there were all ruins and broken walls, and corpses were lying on the roadside.

At that time, who would have thought that today's Daming would be like this!

Along the way, Sun Chuanting's similar feelings did not stop. Even when he returned to Beijing from Nanjing, he passed through this place, but he didn't have the depth of emotion he has now. It's really a contrast between the past and the present, it's too strong!

Sun Chuanting had a meal on the train, looked at the scenery, went to the toilet, and then went to Beijing!

This speed is as fast as the speed of riding a horse and running a waste horse, the key is that people are not tired!

Surprise, joy, smile, etc., alternated on Sun Chuanting's face, so that his thoughts about making such a great contribution and returning to Beijing would be rewarded by the emperor were much lighter.

However, when Shoufu Zhang Pu led hundreds of civil and military officials to greet him, his thoughts returned to the officialdom. At this time, he realized that the generation of those years had grown old. Shoufu Xue Guoguan is also gone, but the younger Zhang Pu.

Is an era about to pass?

At this time, he suddenly wanted to know very much, what happened to the other two of the three people when Qin Wang Jingshi was in the past?

Originally, he was still a little worried that he would not see the emperor when he returned to Beijing. However, when he learned from Zhang Pu's mouth that the emperor was there, he was very happy and went to see him as soon as possible.

On the way, he also asked about the other two.

When he learned that Hong Chengchou had hit the far west, he was named the Marquis of Ming Wei by the emperor; And Lu Xiangsheng became the governor of Persia with the title of secretary of the Ministry of War, but the title has not yet been promoted. It was only at this time that he began to look forward to his expansion this time, and he didn't know what reward he would get?

When he passed by the officialdom of Fengtianmen, he saw a huge map hanging there, which was a map of the world. All the Ming Dynasty is marked in red; The vassal kingdom of the Ming Dynasty is light red. Just by looking at it, the whole world, except for the oceans and lakes, is almost all red. Including the Americas laid down by Sun Chuanting, it has now been reflected in it.

Looking at this map, Sun Chuanting suddenly felt that his credit was actually not great. Da Ming can have such a huge territory, and the one who has the greatest credit is the one he wants to meet.

Thinking of this, Sun Chuanting cleaned up his mood, recalled what he had seen and heard along the way, and solemnly entered the hall to meet him.