Zhou Hei felt that he had put in enough energy.

But I didn't expect that even if the iron sheets were so thin, it was still useless.

He's tried it once before.

As a result, the bowstring directly hung up the burrs on the thin sheet, and the bowstring twitched on his face.

Zhou Hei wanted to try again today, but the result was still unsatisfactory.

Now that Zhao Chen has come, Zhou Hei has not explained it.

Zhou Hei felt that he had let Zhao Chen down.

"Show me the iron sheet." Zhao Chen and Zhou Hei said.

Zhou Hei handed a previously made iron piece to Zhao Chen.

Zhao Chen held the iron piece and looked at the situation carefully.

Sure enough, I saw burrs everywhere on the iron sheet.

This is an extremely common situation.

The burrs are like barbs, hanging on the iron sheet, and encounter something with slightly lower hardness.

It will definitely be easily torn.

For example, bowstrings.

"Dean, it's not a big deal about Zhou Hei. It's all useless to subordinates. I can't think of a way to remove the burr." Zhou Bai spoke, protecting his younger brother.

"Dean, in fact, this is not something that others cannot blame. Our current technology is limited and we cannot get rid of such burrs."

"Yes, Dean, if it were someone else, he might not have been able to do this."

The other craftsmen also spoke up to protect Zhou Hei.

Zhao Chen waved his hand and interrupted everyone.

He came today not to seek revenge, but to see what needs to be solved by himself.

"The burr problem is not difficult to solve, I have a solution here."

"Director, do you have a way to solve this burr?"

"What's the solution?"

"Director, you can't fool us."

As soon as Zhao Chen finished speaking, the craftsmen spoke one after another.

They were anxious about this and didn't expect anything to do it.

Zhao Chen actually has a solution now?

This really makes them unbelievable.

"I'll draw the file drawings for you." Zhao Chen said, then came to the table beside him, picked up the paper and pen to draw on the paper.

After a while, a filed drawing appeared in front of everyone.

"The file can remove small burrs."

"But there is still no way to completely change the situation where the bowstring is broken."

"I have drawings of various types of steel beads. You can follow the steps above to make some steel beads."

"With these, even if the burrs are not completely cleaned, the bowstring can be avoided from being broken."

"By the way, this steel ball is very important, everyone is concerned about it." Zhao Chen took out a drawing from his arms and explained it to Zhou Hei's hand.

...

When he returned to the East College of the College again, Zhao Chen met Cheng Chumo.

He came over to tell Zhao Chen that everyone's training has made great progress in recent days.

So I thought about asking Zhao Chen if he wanted to go and have a look.

The ten days given by Zhao Chen have only half of the time passed, and Cheng Chumo is so confident.

Obviously, the students performed better than Zhao Chen thought.

"No need, it's time that you agreed to."

"Your Majesty and all the officials will come here, don't let it go." Zhao Chen patted Cheng Chumo's shoulder and said.

Cheng Chumo touched his head and nodded at Zhao Chen.

Zhao Chen was about to explain something to Cheng Chumo when he saw an eunuch running over.

"Your Highness, Your Majesty has an order to ask Your Highness to enter the palace immediately and discuss important matters." The eunuch ran over and asked Zhao Chen to go to the palace.

Zhao Chen felt a little surprised that he asked himself to go to the palace and said that there were important matters to discuss.

Now the Tang Dynasty is nothing big, so why are you a little anxious today?

"I understand." Zhao Chen waved his hand and signaled that he understood.

After explaining a few words to Cheng Chumo, Zhao Chen left the academy.

The college is twenty miles away from Chang'an City.

It was already noon when Zhao Chen came to the gate of the palace.

Zhao Chen met Wei Zheng who had not seen for a long time here.

The old guy hasn't come to Zhao Chen once because of Li Tai's incident last time.

Now seeing Zhao Chen, the old guy glanced at the side, not looking at Zhao Chen.

Obviously, the anger in my stomach has not yet subsided.

The emperor sat in the upper head and saw Wei Zheng's appearance, he just smiled.

"Zhao, is lunch available?" the emperor asked.

"No." Zhao Chen shook his head.

"No, then be hungry first!" the emperor said with a smile.

This made Zhao Chen slightly stunned.

He thought the emperor asked himself whether he had lunch or not, but wanted to have a meal here.

result……

"Looking at His Majesty's appearance, I'm very excited. Is Your Majesty going to take a concubine again?" Zhao Chen retorted without hesitation.

At that time, Lao Li's face turned dark.

How old is he? Why do he still think about taking a concubine?

Besides, whether the emperor accepts a concubine is not something you, a prince, should say.

"Cough--" The emperor coughed awkwardly.

He looked at Fang Xuanling on the side.

Fang Xuanling knew what the emperor meant, so he immediately walked to Zhao Chen and bowed and said, "Your Highness, King of Han, Goguryeo has sent envoys to come."

"Yun Gaisuwen?" Zhao Chen frowned.

"It is the current King of Goguryeo, Gao Cang."

"They want to negotiate peace with me, the Tang Dynasty." Fang Xuanling and Zhao Chen talked about the reasons why the Goguryeo envoy came to the Tang Dynasty.

Zhao Chen had thought a long time ago that Yuan Gaisuwen would send someone to discuss peace.

But what Zhao Chen didn't quite understand was why Old Li looked so happy?

"Why does Your Majesty look so happy?" Zhao Chen and Lao Li asked.

The emperor was stunned and restrained the smile on his face.

"The Tang Dynasty fought against Goguryeo, and finally defeated Yuan Gaisuwen's army. They are now sending people to negotiate peace."

"Shouldn't you be happy about this?" the emperor said, looking at Zhao Chen.

"Fang Xiang feels it, should I be happy about this?" Zhao Chen looked at Fang Xuanling and asked.

Fang Xuanling complained secretly in his heart.

This is clearly a dilemma, not a matter of being in trouble.

No matter how he answers, he will offend one between the emperor and Zhao Chen.

When Zhao Chen asked this, he obviously thought it was not worthy of happiness.

As Zhao Chen said, wasn’t that slapping the emperor in the face?

If he followed the emperor and said that this matter was worth being happy, wouldn’t Zhao Chen be upset?

"Your Highness the King of Han, it is difficult for the ministers to know this for a while. They still have to listen to His Highness the King of Han's views before they can make an analysis." Fang Xuanling really had no choice.
To be continued...