Zhao Weiwang in the Warring States Period

Coal replaces firewood, which can prevent firewood from being felled by people to a large extent, protect the environment, and prevent soil erosion.

The problem of water and soil erosion is actually very worthy of attention. Apart from other things, Guanzhong, where the state of Qin has made a fortune, has completely declined after the Tang Dynasty because of serious water and soil erosion and climate change in history, and has never become China again. center of.

As for the possible pollution caused by mining and burning coal, it is selfish to say that even if the entire land of China burns coal 24 hours a day, it will not have any pollution effect on the earth's atmosphere, and it is completely within the scope of the earth's self-regulation within.

After all, there is no such thing as industrialization in this era.

But even so, Zhao Dan was somewhat disappointed when he looked at the Handan sky that seemed to have turned black above his head.

Could it be that Zhao Guo will become the first city on the planet with air pollution in the future?

Forget it, let's talk about this later

Zhao Dan coughed and said, "Mao Sui, remember to notify the Handan City Order later, and ask him to organize a manpower to preach, and don't let the people burn coal in sealed houses to keep warm, so as not to be poisoned by gas."

Such things as gas poisoning often happened in later generations.

The wheels of Zhao Dan's carriage rolled and rolled, and brought Zhao Dan to the destination this time, the workshop area of ​​Zhao Guo.

Zhao Dan went all the way to a workshop in the deepest part of the workshop area, which is also the most secret workshop of Zhao State. It gathers the top master craftsmen and workers of Zhao State, and is responsible for researching various secret weapons for Zhao State.

The news of Zhao Dan's arrival had already been notified here, so when Zhao Dan got off the carriage, General Zhao Guozhen had already brought all the great craftsmen of Zhao Guo to wait here.

Zhao Dan glanced at Fuzhen, and found that this Mohist Lingzi hadn't seen him for a few years, and his whole body had become unshaven, and there was a strong smell on his body, which made people dare not approach him within a foot.

Well, the crazy tech nerd

"I have seen the king!" Fu Zhen led the master craftsmen to salute Zhao Dan.

Zhao Dan covered his nose and coughed, and said to Fuzhen: "Doctor Fu, what is the matter with you, you want to call me here."

In addition to the Ba Niu crossbow, Fuzhen has devoted himself to research over the years, and has made improvements to the weapons and armor of armored cavalry, Zhao Jun's standard crossbow, and vehicles for transporting food, etc., which can be said to be of great significance to Zhao Guo. Big credit.

Naturally, Zhao Dan would not be indebted to the most outstanding master craftsman in Zhao Guo, and gave Fuzhen the title of doctor with a wave of his hand.

Although he is only a doctor, this doctor already belongs to the out-and-out high-ranking nobleman.

Fuzhen was conferred the title of doctor as a craftsman, which caused a lot of controversy in Zhao Guozhong, and even several important Zhao Guo officials expressed their dissatisfaction more or less.

However, Zhao Dan ignored these voices of opposition, and passed the proposal with an extremely strong and undeniable attitude, making Fu Zhen the first artisan doctor in history.

Science and technology are the primary productive forces. As a time traveler, Zhao Dan is well aware of this.

As the saying goes, a thousand pieces of gold buys a horse bone.The abdomen is really the horse bone that Zhao Dan wanted to buy with thousands of dollars. Zhao Dan wanted to tell the whole world through this matter that it is not only by fighting and studying that one can become an official and confer a title. As long as you do a good job in scientific research, The same has a way out!

Fuzhen smiled slightly after hearing Zhao Dan's question, and a mysterious smile suddenly appeared on his face: "Your Majesty, please come with your servants."

He really didn't talk nonsense, and walked directly to the back.

Zhao Dan was stunned for a moment, and thought to himself, this kid actually dares to play tricks with the widow?

If it was someone else, then he would definitely not dare to pretend to be so aggressive in front of Zhao Dan, but the problem is that Fuzhen is the chief craftsman of Zhao State and the talent that Zhao Dan values ​​most, so Zhao Dan thought about it and decided to wait. Let go of Fuzhen's blatant pretentious behavior.

Let's see what he came up with first. If it doesn't work, we can settle the score later.

After a while, Zhao Dan and Fu Zhen came to a school yard in the workshop. The whole school yard has been emptied now, only one wall stands there.

It can be seen that the wall was definitely built temporarily.

Fuzhen waved his hand, and then several master craftsmen disappeared immediately.

After a while, the two master craftsmen carefully carried a big bag, and then put the big bag into a hole that had been buried under the wall in advance.

Looking at the scene in front of him, Zhao Dan's eyes lit up unconsciously, and his heart started beating. Could it be that

Seeing that the craftsmen had finished burying it, Fu Zhen immediately said to Zhao Dan: "My lord, this thing is very dangerous. I ask you to go up to the high platform first and just watch it from a distance."

Zhao Dan nodded, and followed Fuzhen to the high platform hundreds of steps away.

Belly saw that everything was ready, and directly yelled: "Light it up!"

A master craftsman immediately ignited the torch, lit the fuse, and immediately ran in the opposite direction.

The long fuze burned out quickly.

"Boom!"

After an earth-shattering sound passed, thick smoke rose into the sky. Even though Zhao Dan on the high platform had already been mentally prepared, he subconsciously took two steps back, and Mao Sui beside Zhao Dan was even more unbearable. He sat down on the ground with a look of horror on his face.

The thick smoke gradually dissipated, and a large crater appeared at the place where the explosion had just occurred, and the wall that originally stood there had been turned into ruins during the explosion.

Zhao Dan watched all this quietly, a smile slowly appeared on his face.

Gunpowder, you finally appeared!

Belly really straightened his body, his face was full of complacency: "Look, my lord, I named this thing Zhentianlei!"

Fuzhen certainly has reason to be proud.

After he became Zhao Guo's general, Fuzhen received a top-level secret order from Zhao Dan, which was to invest in the research and development of gunpowder.

At first, Fuzhen was a little disapproving of this, but since it was an order from Zhao Dan, Fuzhen had no choice but to invest in it.

However, Fuzhen never expected that when he saw those alchemists demonstrate the effect of gunpowder to himself, he was completely addicted.

After several years of research, Fuzhen finally managed to adjust the gunpowder to a very reasonable ratio, and only then did the scene that Zhao Dan saw today come into being.

The joy in Zhao Dan's heart could no longer be restrained, and he couldn't help laughing out loud.

After a long time, the smile on Zhao Dan's face slowly stopped, and he patted Fuzhen's shoulder vigorously. He just felt how cute Fuzhen looked at the moment. If it wasn't for the strange smell on Fuzhen's body It was too thick, and even Zhao Dan wanted to give Fu Zhen a big hug.

Zhao Dan suppressed the impulse in his heart, and asked Fuzhen: "How is the production of this thunderbolt now, can it blast through the city wall?"

Belly really thought about it, and said: "My lord, to be honest, the formula of this thunderbolt has just been prepared, so the output is still quite limited for now, but it will reach a considerable level soon. As for the power In fact, I have already tried it. If the walls of ordinary small cities only need enough gunpowder, then there should be no problem. But if it is a big city like Xianyang and Yingdu, it may not have much effect for the time being. But please don't worry, your majesty, as long as you give me some more time, whether it is a year or two at the earliest or three or five years at the slowest, any city wall will become vulnerable to Zhen Tianlei!"

To put it bluntly, although this gunpowder has made great progress compared to the beginning, it is still in the initial stage of application. Both the material and the application method still need a lot of improvement, and it is not as powerful as the TNT of later generations.

But Zhao Dan was also satisfied with this, and he smiled and said: "Very good, very good. The widow announces that Fu Zhen will be promoted to Doctor of Chinese Medicine immediately, and the rest of the craftsmen will have their own rewards!"

After seeing Fuzhen's performance, Zhao Dan was completely relieved, so when he left the workshop, Zhao Dan took out a small notebook with great care and handed it to Fuzhen.

"Steam engine?" Fuzhen looked at Zhao Dan with some doubts.

Zhao Dan patted Fuzhen on the shoulder, and said seriously: "Doctor Fuzhen, don't underestimate this thing. I can promise you here today that when you build this steam engine, you will become Zhao Guozhen." It's time to become a king!"

Chapter 833 This spring is a bit cold (third update)

Another winter passed, and the spring of 252 BC came slowly.