He wanted to make a good finished product first, so that they could know the danger of this thing before he could do anything else.

As a result, the * that he had easily managed to get was ruined. However, there are still some benefits: Wanyun should know the danger of *.

"And what did we bring here?" Zheng Sheng frowned, thinking about the black things he brought, wasn't that*?

Liu Wei'er whispered, "I don't know either." It was Wanyun who got it. ”

Zheng Sheng was speechless, Wan Yun is very good at counterfeiting! Hmph, his cleverness is on the wrong path again.

He had people go and find a lot of charcoal, saltpeter, sulfur, paper, clay, etc. Then he looked at them with some depression and sighed.

Is it an exchange*? Or is it just a one-step approach? He thought about the exchange ratio of a mountain higher than a mountain, and he was very entangled.

Zheng Sheng struggled for a night, and before going to bed, Ren Ju hurriedly came in and told him a new message: "Shizi, the person sent to Nanyang has returned." ”

"The people sent to Nanyang?" Zheng Sheng was a little confused for a moment, "Oh, go see my eldest brother's person." What do you think? What did my big brother say? ”

He said that after he finished conveying the words of the prince in Nanyang, Zheng Miao's side never replied. It wasn't until two days ago that Zheng Miao told him: No matter what Huang Chongru did, it was completely his own idea and had nothing to do with him. ”

Zheng Sheng immediately shifted his mind: "Huang Chong Ru came to assassinate me, and it really has nothing to do with him. But Huang Chongru assassinated me, I arrested him, I want to let him go for the sake of affection, and I still don't appreciate it? ”

Zheng Sheng sneered, he felt that Zheng Meng seemed to have the intention of not admitting defeat.

Although, Huang Ke's two sons are planted on Zheng Sheng's side, and they are both people that Zheng Miao values very much, but in this game, he does not admit defeat!

Zheng Meng still has a back move! When Zheng Sheng thought of this, he immediately thought of the King of Shunyang who was about to come over.

Turning back, Zheng Sheng thought that in order to fight him, Zheng Miao would even abandon Huang Chongru? What about the yellow customers? Tiger poison doesn't eat children, can Huang Ke still help Zheng Meng plan wholeheartedly?

Zheng Sheng no longer thought about this bad thing.

Before going to bed, Zheng Sheng made a decision, he wanted to exchange for fireworks.

In fact, after Zheng Sheng got the saltpeter, his heart that yearned for thermal weapons such as muskets and cannons was already beating extremely hotly, but Zheng Sheng soon discovered how far away the dream was from reality.

At first, his idea was to exchange for a firecracker, but the exchange ratio of iron ore for firecracker was hundreds of times, so Zheng Sheng couldn't help but scold in his dream!

A short firecracker should weigh at least a few pounds. In other words, Tianping refused to allow Zheng Sheng to exchange for such a weapon that was too far beyond reality.

He wanted to settle for the next best, but once again he found that it was even more impossible to exchange cannons, and with the same high exchange ratio, the weight of cannons was heavier!

Zheng Shengzhi understood that the balance did not allow him to get something like a plug-in that could greatly change reality. Like Zheng Zizhi, it just allowed him to get some wealth, and it didn't affect the direction of world development too much. But if he exchanged muskets and cannons, it would be too advanced and invincible for the world of the fourth century.

The things that will affect the development process of the world judged by the balance are: muskets, cannons and *, however, *unlike muskets and cannons, which need to be supported by better steel smelting technology, * is just a kind of thing that can be obtained by grinding three raw materials into subdivisions and mixing them in proportion and simple processing, and the technical content is not high.

Therefore, there is only an exchange ratio of twenty or thirty, which is very low compared to weapons such as muskets and cannons, but Zheng Sheng still feels very sorry for this investment, after all, saltpeter is rare.

Zheng Sheng learned that the ratio of the three materials required for the balance was the best ratio, and the final difficulty in preparing the most efficient was the grinding material.

* After getting it, Zheng Sheng tried his best to get better iron, and the way was to get the blacksmith in the backyard of the secret room to step up his research.

This is a long-term work, and there will be no results in the short term. On the other hand, he thought of another application*, fireworks.

Fireworks and artillery battles, Zheng Sheng remembers that many modern people spray the ancients, and use * technology for fun, not in the military.

And now, Zheng Sheng is going to be the first to "risk himself".

The reason why he wanted to exchange fireworks, on the one hand, was because the night of the Jin Kingdom was pure and natural, and there was no artificial imprint except for lighting candles and embellishments. There really is no nightlife. Zheng Sheng was really bored.

And the dazzling fireworks in the night sky are undoubtedly another "big business"! Zheng Wen must be happy to help him.

Most importantly, Zheng Sheng wanted to use the manufacture of fireworks as a reason to train a group of craftsmen who could skillfully make the fireworks. In the future of chaos in the world, the * made by these craftsmen will be an important bargaining chip for him to gain a foothold in the world.

There are no muskets, no cannons, but with *, * bags can always be made, right? The tactical purpose of using trebuchets to throw, organizing death squads to charge, blowing up city gates, and intimidating and intimidating enemy troops can be achieved, right?

This is the most basic thermal weapon, and when he gets better iron, will the musket cannon be far away?

He doesn't rely on the scales, he can also rely on human wisdom to change reality!

The world has changed, and several years have passed, but the balance dream is still the same as it was, and it has not changed.

Zheng Sheng silently said: I want to exchange for fireworks.

A long, cylindrical thing familiar to Zheng Sheng soon emerged on the balance tray.

Fireworks are exchanged for 30 kilograms of saltpeter, 5 kilograms of charcoal, 5 kilograms of sulfur, 10 kilograms of paper, and 10 kilograms of clay.

or * ten kilograms, ten kilograms of paper, ten kilograms of clay.

Zheng Sheng's scalp is numb, and sixty or seventy pounds of things can only be exchanged for one firework!

But he ended up adding the material.

Early the next morning, Zheng Sheng carefully picked up three small and delicate fireworks and sighed silently.

"Is there a pound here?" Zheng Sheng carefully picked up a white cylinder and felt its weight, Zheng Sheng felt that the weight of these three might be less than a catty, but he used more than three hundred catties of raw materials!

Hundreds of times the exchange ratio! He really can't afford to play!

Zheng Sheng carefully put them into the box, and in the face of this flammable and explosive product, he really didn't dare to be careless.

He was going to make further plans when he got home.

Saying goodbye to Ren Ju, and bidding farewell to the statement that came to see him off, Zheng Sheng set off with Liu Wei'er and others. Out of Shunyang City, a short distance to the south, is Shunyang's Danshui River Wharf Qingchuan Ferry.

At this time, in Shunyang City, Ren Ji brought all the people and rushed to the spring breeze to officially start the recruitment plan.

A few days ago, it snowed heavily in Shunyang, and the Danshui River was also frozen, and the temperature was lower after the snow in the past two days, Zheng Sheng was wearing a thick coat, and the howling cold wind that could not be felt in Shunyang City, when he arrived outside the city, he poked his head out of the carriage, and suddenly felt a biting cold, and he immediately shrank back.

Liu Wei'er hugged the small stove, and when she saw Zheng Sheng's strange appearance of tightening his neck, she couldn't help laughing.

"It's so cold outside!" Zheng Sheng sighed with emotion, thinking back to the past few years when he came to the Jin Kingdom, the weather seemed to be getting colder and colder, especially last year and this year, even the Danshui was frozen.

In his geographical knowledge base, there is a dividing line in the Qinling Mountains and the Huai River, and Zheng Sheng can't remember what precipitation or warm tropical climate. But he also remembered another meaning of this line, that south of the line, it does not freeze in winter, and north of the line, on the contrary, it freezes in winter.

And Shunyang is just at the southern foot of the Qinling Mountains, but now it is snowing in winter, and the river is still frozen.

Is the climate getting colder and the Xiaoice period coming? Or is it an accidental fluctuation? Zheng Sheng speculated wildly.

Zheng Sheng's carriage cautiously drove through the frozen Danshui River, and then drove along the river towards the manor.

There was nothing to do all the way, Zheng Sheng quickly arrived at the manor, and to Zheng Sheng's surprise, he would be greeted by Wang Xiang and Gu Daoyun.

Since Shiliang left, the scholars who gathered in Shunyang left separately. Wang Xiang went to see off Gu Daoyun, and then he sent someone to tell Zheng Sheng that he had invited Gu Daoyun to the manor as a guest and would not go back to Shunyang.

Zheng Sheng looked at the two people standing side by side, thinking that Wang Xiang had been a guest for several days when he invited Gu Daoyun to be a guest, and this was an addiction again?

Zheng Sheng and the two of them finished their salutes and looked at Gu Daoyun: "Brother Gu, are you still used to living in the village?" ”

Gu Daoyun smiled bitterly: "Very good, very good, Ling Tang is hospitable, Ling Zai feels at home." ”

Zheng Sheng nodded, but why did he always feel a little weird?

I only heard Gu Daoyun continue: "Zheng Shizi, I have been away from home for more than a month, and I won't go into the manor today, please apologize to Ling Tang on my behalf and leave." ”

Zheng Sheng was stunned, watching Gu Daoyun leave in a hurry, how did he feel like a demon, he scared people away as soon as he came back.

Wang Xiang wrapped his clothes, he didn't care about Gu Daoyun's departure, he pulled Zheng Sheng back to the village, and said as he walked: "It's really cold, let's go back quickly." Brother Sheng, why have you been in Shunyang for so long? ”

Zheng Sheng is really used to Wang Xiang's title to him: "The drunken Xiangju has been burned, I will always deal with this matter." But didn't you go to deliver the stone beams? Why did you come back to the manor directly? ”

Wang Xiang said with a smile: "After Brother Shi leaves, Brother Gu will also go back to Nanxiang, I think that he must be very boring to go on the road alone." So I came back with him, and I invited him to rest at the manor. ”

Zheng Sheng couldn't complain, there was a distance of less than twenty miles between Shunyang City and Nanxiang City, and it didn't take two hours to take an ox cart, how boring could it be?

"Rest? What have you been doing these days? Zheng Sheng asked curiously.

"Didn't you do anything? Just look at the book, write and write. ”

"I don't think he wants to leave."

"Well, Brother Gu really wants to leave, but your mother and my little aunt said that it is too cold now, and it must be uncomfortable on the road, so I left him in the manor, and wanted him to wait for the weather to be warmer before leaving. My little aunt has always been the best! ”

Zheng Sheng couldn't help but sigh that Wang Xiang was afraid that people would be bored on the road, so he accompanied people home; Mrs. Wang is afraid of the cold, does she want to keep people until the spring of next year?

No wonder, when he had a chance, Gu Daoyun wanted to flee. It turned out that it wasn't his fault, but because of their aunt and nephew!