Soon, a middle-aged man with a gray face came to Zhang Nan and Wei Tianwu, and he saw that this man was a long-term worker.

The middle-aged man gave a gift and said, "I've seen an adult."

Wei Tianwu nodded and said, "Mr. Zhang, this is the best blacksmith in the Ministry of Works. He participated in the construction of this vertical furnace. Of course, since Lord. Zhang, you proposed the system to rank craftsmen, this is the first person in the Tang Dynasty to obtain a fourth-level blacksmith." Wei Tianwu said with a smile.

"Oh, it seems that this blacksmith Ge must be outstanding." Zhang Nan also said with a smile.

"I dare not take it, but I dare not take it. Since I got the drawings for the iron smelting of the vertical furnace, I have been thinking about who can come up with such a way to increase the iron production. I guess it is Lord Zhang."

"That's right, it's me." Zhang Nan smiled.

"It's really amazing. This vertical furnace has thrown the raw iron in it, and you will know the output immediately." Ge Blacksmith smiled and looked at the small vertical furnace that was emitting black smoke.

Blacksmith Ge took Zhang Nan and Wei Tianwu to the shed not far from the vertical furnace, waiting for the final output.

When Zhang Nan was drinking the third bowl of water, a craftsman came to report, and the young craftsman looked excited. When Zhang Nan saw the appearance of the craftsman, he knew that the iron yield was definitely not low.

The young craftsman said in a trembling voice: "Mr. Wei, the iron production is out."

"Oh, what's the yield?" Wei Tianwu asked quickly as soon as he heard that it had come out.

"The output is ten times higher than the previous iron smelting methods!" the young craftsman said excitedly.

"Ten times!" Ge Blacksmith stood up with a squeak.

It’s no wonder that Blacksmith Ge is so excited. The main reason is that the current vertical furnace is still a smaller version, not the original version, but it is ten times more productive than before. If the original vertical furnace is used, it will take off.

Wei Tianwu was also very excited when he heard this yield.

"Mr. Zhang is really a genius. This vertical furnace is really useful. It's great. I'll report it to the emperor now." After Wei Tianwu said that, he was about to go to Li Er, but was stopped by Zhang Nan.

"Don't worry, Lord Wei." Zhang Nan said.

"Why did Lord Zhang stop me? How could I not tell the emperor to know about such gratifying news?" Wei Tianwu asked strangely.

"Mr. Wei, think about it, this vertical furnace is just a test piece, and the original vertical furnace can be built soon. Why not wait until the original vertical furnace is built and let the emperor come to see it in person. Here you can see the large output intuition. It is best to practice it again with the previous iron smelting method. If there is a comparison between the two, the emperor will definitely be happier." Zhang Nan said.

Wei Tianwu thought about it and Zhang Nan did make some sense, so he gave up the idea of ​​entering the palace to report good news to Li Er.

Just as the crowd was very happy about the output that was ten times higher, the stove not far away made a crackling sound.

"Mr. Zhang, have you heard anything?" Wei Tianwu first heard the crackling sound of the vertical furnace and asked strangely.

Zhang Nan listened carefully and there was indeed a strange "click" sound, saying, "I heard it, where did this come from?"

Everyone heard the "click" sound, so they began to find out where the "click" sound came from.

The blacksmith Ge first discovered, "Several adults, this crackling sound seems to be coming from the vertical furnace." After hearing it carefully, several people found that it was indeed a sound coming from the vertical furnace.

"It's strange, why does it make a "crack" sound? Ge Blacksmith, did there be such a sound in iron smelting before?" Zhang Nan asked.

"When I say sir, there is no such sound." It was the first time Ge Blacksmith heard this sound, which was very strange.

Only then did Zhang Nan put his attention on the vertical furnace. It didn't matter when Zhang Nan looked at it, and his hair was standing up because he saw the earthen vertical furnace, a crack that could be seen with the naked eye appeared, and the crack was still widening, making a "crack" sound.

"Run, run quickly, the farther you run, the better." Zhang Nan shouted loudly. After saying that, Zhang Nan ran away, and flew away at the end of the disaster. He was not a living Lei Feng. Seeing that the situation was wrong, it was more important than anything else. He still had a wife waiting to marry, so he couldn't die under this furnace.

Hearing Zhang Nan's shouts, the group of people suddenly scattered. Anyway, all the officials ran away, so why don't they run away?

Sure enough, just after running to the back of the small shed, Zhang Nan heard a "boom" behind him. He looked at him and saw the hot iron flowing on the ground.

In the past, I heard a certain steel mill explode on the news, but now the explosion of the vertical furnace is happening in front of me. Zhang Nan thought about it and couldn't help but feel a little scared.

"Mr. Zhang, why did you blow up the stove? What's going on?" Wei Tianwu shivered as he looked at the iron all over the ground.

"How did I know how to fry the furnace? It must be when I made the vertical furnace. When there was a problem at which step, my drawings were absolutely fine." Zhang Nan said firmly that maybe he would make mistakes, but the system would definitely not make mistakes.

"Mr. Zhang, let's leave here first and go back to the Ministry of Works before talking about this."

The two of them left the stand furnace and returned to the work department. After drinking several cups of tea in one breath, Zhang Nan felt that his hands began to feel warm.

"Mr. Zhang, I advise you to go to the palace to find the emperor." Wei Tianwu also drank several cups of tea in a row before speaking.

"Look for the Emperor? Why do you need to find the Emperor?" Zhang Nan asked strangely.

"Mr. Zhang, what happened so big, wouldn't you tell the emperor first? Although no one died just now, those censors will definitely be heard from the news tomorrow and will write a book in the court." Wei Tianwu said.

"See me? What does this matter? It's not the vertical furnace I built. If this furnace is fried, it can't be on my head." Zhang Nan said.

"Hey, Lord Zhang, you don't know those censors. Those people are people who are asking for trouble for others every day, and if they don't ask for trouble for them all day, they will feel uncomfortable all over." Wei Tianwu said.

"Mr. Zhang, you don't know. Although you have a good relationship with many adults in the court, these censors have long disliked you and have been waiting for you to make mistakes. Fortunately, I will write a book in front of the emperor." Wei Tianwu continued.

"Why don't you like me? I didn't offend them either." Zhang Nan thought for a while, and he did not offend those censors.

"Hey, Lord Zhang doesn't know. Since the Emperor recruited you into the court, Lord Zhang, you have been soaring. But these censors don't know what the things Lord Zhang did mean to me. They all think that Lord Zhang is just a liar in the world." Wei Tianwu sighed and said.

"Well, is there such a thing?" Zhang Nan said strangely.
Chapter completed!