Cao Pi locked himself in the mansion after Cao Xiu's wedding banquet. He decided to make more and better small inventions to make his own contribution to the Han's fitness career.

Cao Cao had always encouraged Cao Pi to invent and create, and he was very supportive of Cao Pi's whim. Cao Cao hired many craftsmen to participate in Cao Pi's plan.

Cao Pi hoped to improve the combat effectiveness of the army through fitness, but the food problem of the soldiers and Cao Pi's lack of knowledge reserve in military skills training were not enough to complete his vision. Now he can only use push-ups, sit-ups and other later exercise methods.

Use Cao Cao's hand to promote.

Cao Cao handed over an empty courtyard in his mansion to Cao Pi, where Cao Pi exchanged experiences with the craftsmen every day. Cao Pi was responsible for the design and the craftsmen were responsible for the production. They were extremely busy all day long.

Bian was worried when she saw Cao Pi behaving like this. She believed that these strange skills and tricks were not as good as studying classics and history to gain Cao Cao's favor.

"Zidan, come and try this." Cao Pi saw Cao Zhen coming to visit the class, so he invited Cao Zhen to try the latest sit-up machine.

This is a wooden equipment. The main body consists of a curved wooden board and several wooden parts. Cao Zhen lay down on the wooden board at Cao Pi's signal.

"Zidan, hook your feet around the wooden bar... lie down flat, lie flat, with your body pressed against the wooden board..." Cao Pi directed Cao Zhen. As the first fitness person developed by Cao Pi, Cao Zhen has been doing it recently.

Cao Pi's experimental subject.

"Zihuan, it's very uncomfortable for my neck to lie down like this." Cao Zhen said while lying on the wooden board with his head raised.

"Is your neck uncomfortable? It seems that the arc is a bit too big..." Cao Pi leaned on his chin and muttered.

"What should we do next?" Cao Zhen asked.

"Try doing sit-ups." Cao Pi replied.

Cao Zhen tightened his abdomen and used a lot of strength to barely stand up his upper body. Cao Zhen looked surprised. He usually didn't do sit-ups so hard.

"How is it? How is it? Is it much more difficult than before?" Cao Pi asked urgently.

"It's a bit..." Cao Zhen replied.

"Do ten more and see if there is any difference compared to usual." Cao Pi wiped the sweat from his forehead and said.

"Okay." Cao Zhen continued to lie flat on the board and did ten sit-ups in a row. He felt that his lower abdomen was burning. These ten sit-ups were more strenuous than the fifty sit-ups before. "Lie down."

This board is much more difficult to work on than before, and I always feel like someone is pressing on my shoulders."

"That's right, it means that the movements you did before were not particularly standard. This sit-up machine can help you solve these problems..." Cao Pi said excitedly, and then he looked at Cao Zhen with eager eyes and continued to ask,

"Any other questions?"

"...My back hurts a bit when I lie on it." Cao Zhen replied.

"Oh, yes, why did I forget about this?" Cao Pi patted his head, and then shouted to the craftsmen who were eating, "Lao Yu, Lao Zhang, come here quickly."

The two craftsmen who were eating sighed when they heard Cao Pi's call. They put down the big cakes in their hands and came to Cao Pi's side.

"Sir, I'm eating, you should eat something first, it's noon..." Old Yu said complainingly.

"What can I put on the bed to make it softer? I just want you to express your opinions, and I don't want you to settle it now." Cao Pi looked at Lao Yu's reluctant look and said with a smile.
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Not only were these craftsmen provided with three meals a day, but they also had wages to pay. These things were something they would never have dared to think about before, but Cao Pi's demands were too many. If any of the equipment had even the slightest flaw, they would have to be dismantled and rebuilt.

Even so, Cao Pi would always have some weird ideas that needed them to realize.

However, Cao Pi never put on airs with them. After the craftsmen became familiar with Cao Pi, they would casually complain. Cao Pi was never angry and would even often joke with them.

"It should be enough to make a hay mat and lay it on." Lao Zhang thought for a moment and replied.

"No, no, you have to use good materials. It has to feel comfortable when lying on it. Lying on a hay mat is not comfortable." Cao Pi rejected Lao Zhang's suggestion, "What do you think about using tanned deer skin?"

"Although deerskin is soft, it is too luxurious." Lao Yu said with some surprise after hearing Cao Pi's proposal.

"Then it's settled. I'll go find my father and ask for some deer skins. Then you can put the hay mat on the lying board and wrap the deer skin on the hay mat. It will be more comfortable to lie on it." Cao Pi was satisfied.

Di Di said, Lao Yu and Lao Zhang both secretly murmured, this son Huan Gong is really a prodigal son...

"Oh, by the way, just now Zi Dan said that his neck felt uncomfortable lying on it. Please make the arc smaller. I'll go find my father now." After Cao Pi said this, Lao Yu and Lao Zhang took a deep breath.

There are really too many requirements.

Cao Pi and Cao Zhen came to Cao Cao's office. Cao Cao was playing shuttlecock with Dian Wei in the courtyard. When he saw Cao Pi, he hurried to Cao Pi's side like a child.

"What are your thoughts again?" Cao Cao asked.

"Father, I came to ask you for some deerskin. I need some cushions for the new sit-up machine." Cao Pi replied speechlessly. Since the shuttlecock and sandbags were "invented", Cao Cao would try these games whenever he had time.

, the wealthy families in Juancheng also followed suit, and even derived many advanced rules. After all, the winter is cold, and no one can endure loneliness.

"You can go directly to Lou Yi later. I told him before that if you need the fitness equipment you made, you can go to him." Cao Cao waved his hand and said.

"Father, there is one more thing I want to tell you." Cao Pi said.

"Oh? What's the matter?" Cao Cao asked.

"I want to ask my father to set up a workshop. We will gather all these craftsmen in the workshop. These fitness equipment always need to be continuously improved. Maybe they can make some new weapons." Cao Pi said.

Talk.

"Is this necessary?" Cao Cao asked doubtfully.

"Father, don't underestimate these craftsmen. Let them develop some weapons that may be of great use in the future. Moreover, they have learned the technology of manufacturing fitness equipment. These technologies must not be spread to Lu Bu."

Cao Pi persuaded.

"Okay, since you trust them so much, my father will fully support you." Cao Cao immediately agreed to Cao Pi's request after hearing the word "Lü Bu".

"Thank you father, then I will go find Mr. Lou first." Cao Pi said goodbye to Cao Cao happily.

The next day, many people came to Chen Gong's old residence, and the old door plaque was replaced by one with the words "Luban Workshop". Cao Pi stood at the gate of the courtyard and looked with satisfaction at the busy craftsmen.

"Sir, why are you here?" Cao Pi turned around and saw the dusty Shi A. Shi A went home to visit relatives a few days ago and just returned to Juancheng today.

"Mr. Shi, what do you think of my workshop? Is it grand or not?" Cao Pi pulled Shi A into the courtyard with great interest. Shi A looked embarrassed when he glanced at the words on the door panel.

"Did Master make these?" Shi A asked in surprise as he looked at the various instruments in the courtyard.

"Of course, Mr. Shi may not know it yet, but I am now the most powerful designer in Juancheng." Cao Pi said proudly. He did not feel guilty at all about plagiarizing the wisdom of more than a thousand years.

"What is design?" Shi A asked doubtfully.

"It's about realizing my own ideas. Of course, I won't be able to make these things myself, so I need these craftsmen to help me." Cao Pi explained.

Shi A nodded, looking at the scene in front of him he felt a little incredible.

"Sir, are you also interested in these things?" Cao Pi asked looking at Shi'a's strange look.

"My...father is a carpenter, and I have been doing some carpentry since I was a child." Shi A replied.

"That's great. Mr. Shi can come to the workshop if he doesn't have anything to do. There are many equipments that need to be experienced before you can find the shortcomings." Cao Pi said happily. After all, Cao Zhen is young, and Shi A has an adult figure.

The designed equipment is also more universal.

"I will come often." Shi A nodded and said.

"Lao Yu, come here quickly. Let me introduce you. This is Mr. Shi A. He is my swordsmanship teacher. He will come here often in the future. As a manager, you must entertain others well," Cao Pi said.

"Don't worry, sir. If you hadn't recommended me to be the manager, I would never have thought that I would be able to work in such a big courtyard." Lao Yu replied.

"We can't lag behind in the development of weapons. I told my father a lot before he agreed." Cao Pi continued.

"Wei." Lao Yu replied gracefully.

Cao Pi and Shi A stayed in the workshop for a long time. It was getting late, and the two of them returned together. Cao Pi was a little excited, and so was Shi A.

In the early morning, Cao De passed by the Luban Workshop on his way to give lectures in Cao Mansion. The wooden board set up outside the workshop had a message for hiring craftsmen written on it. He looked at the nondescript billboards and was a little dissatisfied. The entertainment atmosphere in Juancheng recently was too

If it's too serious, I must go to my elder brother and talk to him about it.

"Why didn't Zihuan come today?" Cao De came to the classroom. The seat in front of Cao Zhen was empty, so Cao De asked about Cao Zhen.

"Zihuan went to the workshop to play!" Cao Zhang replied quickly.
Chapter completed!