But who can blame them for the fact that these craftsmen in front of us are already the most outstanding craftsmen in the Tang Dynasty!

If they were punished every other day, who would dare to work as a craftsman in the Imperial Household Department? Who would dare to serve the court?

When the craftsmen heard Li Shimin's comfort, their gratitude was beyond words and they all knelt on one knee to express their gratitude.

The little princess who was watching this scene curled her lips slightly, obviously dissatisfied with the craftsmen's failed performance.

However, she also didn't forget to ask Li Haoze in her heart, "Xiao Rangjun, what are the bearings of that car over there made of~?"

Li Haoze smiled slightly and responded, "Xiao Sizi, the automobile bearings in our area usually use a material called steel.

This material has undergone special heat treatment and precision processing, and has extremely high hardness and wear resistance, and can withstand the huge pressure and friction generated during the driving of the car."

The little princess' eyes widened upon hearing this, and she inquired curiously, "Steel? Is it the steel made in the blast furnace that Little Rang-kun brought?"

"No!" Li Haoze shook his head. "Although steel is also produced in a blast furnace, the steel needed for automobile bearings has higher requirements for purity and strength.

We use a special alloy steel that requires precise control of the alloying element content and the use of special heat treatment and processing technology to meet the requirements of automotive bearings."

The little princess understood what she heard. She nodded and asked, "Can the Tang Dynasty refine this special alloy steel?"

Li Haoze was silent for a while before he slowly said, "Theoretically, it can be refined, but it requires a very high level of technology and sophisticated equipment.

Although Datang’s smelting technology has already established a certain foundation, it may take some time for research and development to reach this level.”

"However..." He changed the subject and continued, "For a steam carriage like this, the steel produced in a blast furnace is more than sufficient."

“As long as we can make bearings with sufficient precision,” he adds, “and ensure they can be replaced promptly, then there’s absolutely no problem!”

Hearing this, the little princess looked up at her own hands, a hint of lovely confusion and loss flashing in her eyes.

Although she is young, her mind is not simple at all.

The little princess was thinking to herself: It has taken her a week or two to work so hard with her little hands to make a steam engine.

It is simply an impossible task to rely on these little hands to make the streets of the Tang Dynasty full of steam vehicles.

Thinking of this, the little princess couldn't help but sigh softly. It was all because those craftsmen were too stupid and couldn't even build a small steam engine.

Perhaps sensing the little princess's low mood, Li Haoze suddenly asked, "By the way, Sizi, do you know how the cars at my brother's house are made?"

The little princess shook her head, her eyes sparkling with a desire to explore the unknown, and asked Li Haoze: "Xiao Rangjun, how are cars made? I really want to know~"

Li Haoze smiled and began to describe the world full of machinery and technology: "Where we are, automobile production is a very complex and sophisticated process.

First, designers draw a blueprint of the car, determining the shape and size of each component.

Then, workers will use a variety of high-precision machines to process and manufacture these parts, such as engines, bodies, tires, etc...."

"However, in order to produce these parts, we need a basic thing, that is a machine tool!"

"As long as there are machine tools, ordinary people can produce high-precision parts with just practice, and mass-producing steam engines is naturally no problem!"

Li Haoze went on to explain, “A machine tool is like an ingenious tool.

It enables us to precisely cut, drill, and mill metal to create a variety of complex parts.”

The little princess listened attentively, her eyes sparkling with curiosity and yearning. "Machine tool? What kind of magical thing is that? Can the Tang Dynasty even make it?"

"Of course!" Li Haoze nodded without hesitation. "Actually, you can build that thing, Sizi. And it's much easier to build than a steam engine."

The little princess's eyes immediately lit up, as if a new world had opened up before her.

She eagerly coquettishly said to Li Haoze, "Really? Then...how do we build the machine tool? Xiao Rangjun, please teach Sizi!"

"Uh..." How could Li Haoze have the heart to refuse such a cute little princess?

But now, in public, the timing is not right.

He had no choice but to comfort her, "Don't worry, Sizi. You can easily find this information on the computer."

"Once we're done here, let's go back to the modern era. I'll help you search for...Sizi?!"

However, the little princess couldn't wait any longer.

Hearing that it was on the computer, he simply left Li Haoze in his body and traveled to the modern era on his own.

Li Haoze was stunned. He didn't expect the little princess to be so anxious.

Originally, he wanted to go over and take a look.

However, when he thought about the little princess who had already mastered the use of the computer and the warm embrace of Li Lizhi at the moment, Li Haoze suddenly felt reluctant to leave.

"Forget it," he thought to himself, "Sizi is a grown-up boy now, he should learn to study on his own."

Comforting himself in this way, Li Haoze lay in Li Lizhi's arms and talked to her happily.

On the other side, after the little princess crossed over to Li Haoze's body, she skillfully got up from the bed and then couldn't wait to go to the computer.

She turned on the computer, deftly manipulated the mouse and keyboard, and entered the search engine.

"Machine tools...how to make them?" the little princess muttered softly while entering keywords into the search box.

As the search engine ran, a large number of web pages and information related to machine tool manufacturing quickly appeared on the screen.

The little princess widened her eyes and carefully browsed every search result, afraid of missing any important details.

She opened several professional-looking websites one by one and carefully read the articles and illustrations on them.

Although it involved many professional terms and technical details that she had never been exposed to before, the little princess was not discouraged.

As she read, she pondered carefully, trying to digest and absorb this unfamiliar knowledge.

Time passed by unknowingly, but the little princess was completely unaware.

She was immersed in this new field of knowledge and seemed to have forgotten everything around her.

In the blink of an eye, the possession period expired and the little princess had to return to the Tang Dynasty.

But she ordered Li Haoze in a firm tone to cooperate with her to continue looking up the information.

The little princess continued to learn eagerly through the screen that only she could see.