Go and capture those thirty-six fierce villains.

Okay...

Qin Ning had only heard about it before, but today he truly experienced Bai Gu's talent in craftsmanship.

Taking the ink pouch returned by the other party, Qin Ning took out one item after another from it under the influence of his qi.

A stack of silver notes, each worth one hundred taels, roughly counted to be sixty or seventy.

This is truly a business where you risk your life... In addition, there is a Hook Technique Martial Arts Manual, a martial arts manual that can be cultivated to the seventh rank of copper skin, and three bottles of unknown pills.

And some ordinary change of clothes.

"A fairly standard small-time leader has fallen..." Qin Ning thought to himself, tossing the items back into his ink pouch. Looking up, he saw Bai Gu staring blankly at his hands.

"What are you thinking about?"

"Ah...ah, it's alright, Brother Qin, your matter is resolved, please come with me."

As Bai Gu spoke, he grabbed Qin Ning's sleeve and led her toward the fourth basement level.

This is the first time I've known that the Tiangong Building actually has underground structures.

Qin Ning looked around with curiosity, almost like a tourist.

The clanging and banging inside the first and second floors, according to Bai Gu, indicates that a batch of weapons custom-made for the Prince's Mansion are being manufactured.

Upon reaching the third floor, one sees many Mohist disciples running back and forth, carrying various strangely shaped large parts. It seems they are assembling some kind of large military weapon similar to the Guanghan Crossbow.

Before even reaching the fourth floor, Qin Ning clearly sensed the temperature rising in the air. After descending the steps and passing through the massive lapis lazuli gate, which was as thick as three people, he was amazed.

The heat wave that hit him made him catch his breath, and his back was instantly soaked with sweat.

Turning his head, Qin Ning saw that Bai Gu was covered in cyan gold armor. Just as Qin Ning was about to mobilize his internal energy to fight against the high temperature and heat wave, he saw Bai Gu hand him a metal disc.

"Press it on your chest and use your internal energy to activate it," Bai Gu said in a muffled voice.

Qin Ning curiously took it and tried it according to the method. A layer of metal fragments instantly covered his body surface, and the heat wave was isolated from the outside.

What amazing creations of the Mohists... Is this the art of craftsmanship?

"This is the first version that my master and I made together when we were designing the Hundred-Refined Azure Armor. It doesn't increase strength much, but its defensive capabilities are good and it's enough to block this heat wave."

Michael explained softly and led the way, leading the two into a space filled with metal pipes and giant barrels.

The South China Railway, dressed in a shirtless robe, walked towards us.

"Senior Nan," Qin Ning said, bowing slightly.

"Young friend Qin? There was quite a commotion at Zhenji Ridge yesterday. Are you alright?"

"Thank you for your concern, Senior. Although there was some commotion yesterday, with the presence of the Grand Princess and her large cavalry force, as well as the leader of the Mohist school, the group from Da Ling did not cause any trouble."

After yesterday's chaos, the Prince Su's Mansion naturally had to give an explanation to the outside world: there were spies from the Great Ling Dynasty present at Zhenji Ridge.

Then they would become the best explanation.

"This world is getting more and more chaotic. What did Ji Heng bring you here for? To see that steamed chicken he's researching?"

Nan Tie sighed, and seeing that Bai Gu had already walked to the metal pipe, he suddenly took a step closer and whispered to Qin Ning, "Young friend Qin, you have a good relationship with Ji Heng. Can you help me persuade him? He has a good Heavenly Craftsmanship to learn, but he spends all his time studying nonsense. I don't know where he learned this theory from."

"You learned it from me..." Qin Ning didn't dare say these words out loud.

"Okay, I'll try my best to persuade him."

"Well, you young people can chat here. This old man has a headache," Nan Tie said, striding deeper underground.

You don't know that he previously wanted to assassinate the young emperor of Daling. Now that he can stay in Tiangonglou and do research in peace, that's pretty good.

Qin Ning looked at Nan Tie's back, then at Bai Gu over there, and suddenly had a hallucination of herself teaching the little black cat to read.

He shook his head, dismissing the thought.

That guy's a genius, he just wants to forge a different path. My own dog, on the other hand, is just plain lazy!

"Brother Guiyuan, come and take a look at me..." Bai Gu stood in front of the metal pipe for a while, then suddenly turned around and called out.

Then, he told Qin Ning all the problems he was currently facing.

In addition, he took out a large number of scrolls of unknown material and spread them out on the ground, with large sections of them drawn with structures that Qin Ning could not understand.

What is this?

What is this?

Hey, you two look alike yet different...

Qin Ning felt a sense of bewilderment, as if she had accidentally wandered into a mechanical engineering classroom...

However, he roughly understood that Bai Gu was struggling with how to reduce costs and improve efficiency.

This is so that the theory can be put into practice and generate real economic benefits.

"Hmm..." Qin Ning tried hard to recall what she had learned in high school and the knowledge she had gained from watching short videos. "I think, why don't you try separating this condensation device? And what do you think? Why don't you set up a visual monitoring device on the outside of this tank, the kind that can reflect the amount of heat in the steam inside? That way, you can figure out the limits that the tank wall material can withstand, and only condense when it's time to condense, which should improve the efficiency a lot..."

Qin Ning recounted everything she could remember in one breath, but she couldn't guarantee that she would remember the same things next time.

With the armor blocking his view, he couldn't see Bai Gu's expression, but Qin Ning judged from his movements that the other party was probably thinking.

After about half an incense stick's time, the bronze figure in front of him jumped high into the air, gesturing wildly: "Brother Guiyuan, everyone says I'm a genius in the art of craftsmanship, that's utter nonsense! Forget about medicine, join my Mohist school, come on, I'll take you to become a disciple of the Grand Master!"

As Bai Gu spoke, he made a move to pull Qin Ning away!

What on earth are you thinking about now...? Taking two steps back, Qin Ning waved his hand:

"I have no interest in practicing the art of craftsmanship; my true calling is to learn medicine and save the world."

Knowing his own level, Qin Ning spoke with extreme compassion, as if afraid the other party wouldn't believe him.

Bai Gu was disappointed upon hearing this, seemingly lamenting that the Mohist school had lost a future master craftsman.

With the ink pouch opened, the purpose of this trip had been achieved. Qin Ning thought for a moment and said:

"Jiheng, you go ahead with your work. I have other things to take care of, so I'll take my leave now."

"Then I'll see you off."

The two walked to the outside of the Heavenly Craftsmanship Tower. Qin Ning removed the armor covering his body and handed back the metal disc.

"Brother Guiyuan, you selflessly shared your ideas, so I'll give this to you." Bai Gu didn't accept it, his eyes clear.

Seeing that he was sincere, Qin Ning did not refuse. After exchanging a few pleasantries, he was about to turn and leave when he was called back.

"Brother Guiyuan..."

"Is there anything else?" Turning around, Qin Ning saw that the other person looked like they wanted to say something but hesitated, and curiosity arose in her heart.

"Um... could you lend me some money? I don't have much savings left. I'm afraid it won't be enough to cover my expenses when I study the design changes you mentioned." Bai Gu's voice trailed off as he spoke, probably because he didn't have much experience with borrowing money.

Perhaps feeling it was inappropriate to borrow money without a word, he quickly added, "How about this, if this research succeeds, four...no, five-tenths will belong to you, Brother Yuan. And I'll draw up a written agreement, just in case it doesn't work out..."

How much do you want to borrow?

Bai Gu was still rambling on when Qin Ning interrupted him directly.