When Li Yuanjia returned to Chang'an, it was getting late.

However, even if he felt a little tired, Li Yuanjia did not dare to rest after arriving home. He went directly to the study and after flipping through it for a long time, he pulled out a pamphlet.

I sat down at my desk and kept writing.

Because Li Yuanjia was strictly ordered not to disturb anything important, he sat there for a long time. It was not until a ball of bright light fell in front of his eyes and he felt the breath of a person that he suddenly realized that the sky had turned dark.

Seeing the way the visitor carefully put down the candlestick, Li Yuanjia felt warm in his heart and said softly: "Fengzhu, haven't you rested yet?"

"How can I sleep when the king is not here?"

Smiling slightly, Fang Fengzhu did not look at what was written in front of Li Yuanjia. He just blinked and whispered: "Your Majesty, your Majesty announces that you will enter the palace tomorrow..."

"Don't worry, it's just a small matter."

Seeing the worried look on the princess's face, Li Yuanjia did not let her finish her words, but just smiled and comforted her.

Although the person who sent the message did not go into details, Li Shimin still asked someone to bring him a sentence, announcing that he entered the palace to overturn things... Just such a sentence made Li Yuanjia roughly guess the reason why the second son was looking for him.

The goal of turning over 300 vehicles a month has been achieved.

So in the next period of time, Li Yuanjia will withdraw the manpower sent by Chen Mu and others, and then return the one hundred carpenters and one hundred handymen to the emperor, as well as a workshop that has been built.

But Li Yuanjia also knew that for an empire, these are definitely far from enough!

One state might need hundreds or even thousands of rollovers. How many would be needed for the hundreds of states in the Tang Dynasty? Especially the severe drought in dozens of states the year before last, it can be said that Li Shimin and the ministers of the DPRK and China were still frightened.

, the more objects like rollovers, the better.

So when he was writing and drawing in the booklet, Li Yuanjia was making detailed calculations.

However, seeing that Fang Fengzhu still had a worried expression, he felt something in his heart, and suddenly stretched out his hand to hold the princess's arm, and then with a little force, she fell into Li Yuanjia's arms with a squeak.

"Your Majesty..."

A low groan made Li Yuanjia's heart tremble, and Fang Fengzhu's weak struggle made his whole body agitated.

But obviously the time and place were not right, so Li Yuanjia just teased his princess a little, then chuckled and said: "Okay, Fengzhu, you go back to your room first. I'll go find you after I finish writing this."

…”

…

The next morning, Li Yuanjia did not rush to enter the palace at the time of going to court. Instead, he calculated the time and arrived at the palace gate before retreating.

After waiting for just over a stick of incense, he received the emperor's order announcing his entry.

After entering the palace, Li Yuanjia was a little surprised, because in addition to the emperor Li Shimin, there were still several big bosses in the palace at this time, namely Fang Xuanling, Wei Zheng and Changsun Wuji.

They are all acquaintances.

After stepping forward and bowing to each other, Li Shimin waved his hand and said with a smile: "Sit down... I knew you were coming, so I specially asked someone to make you a pot of tea. How does it taste?"

.”

"...Thank you, Your Majesty!"

After being stunned for a moment, Li Yuanjia immediately looked moved and took a sip of the tea that the palace maid had just served.

The Tang Dynasty during the Zhenguan period was really lovable!

If it were placed in the Braided Dynasty a thousand years later, even if he was a prince, he would probably only be able to pose in two poses: kneeling or standing when meeting the emperor, let alone drinking tea in front of the emperor...

Don't tell me, this cup of tea doesn't taste bad.

Seeing Li Yuanjia's slightly surprised expression, apart from Li Shimin's eyes that looked slightly surprised, the other three bosses also had different expressions on their faces, each with different thoughts in their hearts.

Anyway, the corners of Fang Xuanling's mouth curved, and a flash of joy flashed in his eyes.

Although the emperor treated his brothers very well after the Xuanwumen Incident, like King Han, who specially asked people to prepare tea after entering the palace, this was an extraordinary favor in the eyes of Fang Xuanling and others!

Then, under the gazes of the three important ministers, Li Shimin said: "King Han, the main reason why you are admitted to the palace today is because of the overturning incident!"

"Um."

Nodding slightly, Li Yuanjia immediately straightened his body and looked like he was listening carefully.

After a brief pause, Li Shimin continued with a smile: "One hundred carpenters can build three hundred overturned carts in a month, which is two or three times faster than the master craftsmen in the palace... To be honest, Han Han

When Wang said this number, I really didn’t believe it, haha.”

"The King of Han is so talented that I admire him greatly!"

After listening to the emperor's words, Changsun Wuji nodded with a smile and looked at Li Yuanjia: "But I have never quite understood what method the king used to allow the craftsmen to build so many overturned cars?"

"Haha, it's actually very simple."

With a slight smile, Li Yuanjia explained the principles of assembly lines and standardization in detail.

The assembly line is actually very easy to understand. It is nothing more than assigning what one person had to do to a dozen people. Everyone will greatly increase the speed because of their proficiency. As for standardization, it is even simpler, which means that everyone does it.

The parts that come out can be used universally. Anyway, as far as the rollover they make is concerned, even if the accuracy is slightly different, it is completely sufficient.

Li Yuanjia said it simply, and it is not difficult for everyone to understand it.

They are all smart people, and no one is stupid, so there is no pressure to understand the roughest version of Li Yuanjia's explanation. The only difficulty is how to allocate the carpenters and handymen so that their cooperation can achieve the highest efficiency, which involves

Slightly more complicated calculations are a bit difficult for a few old guys.

Fortunately, Li Yuanjia didn't need to explain it too clearly, as long as they understood the meaning, it was enough.

When Li Yuanjia said, he picked up the cup and took another sip to soothe his throat. Wei Zheng spoke at the side: "Your Majesty, it sounds easy, but why did it take more than half a year before? If you just taught the craftsmen to make one,

With two parts, it should be easy."

"Yes, it's easy to learn, but the workshop doesn't just teach them this."

Shrugging, Li Yuanjia smiled and said: "They also need to find the best number of people to make each component and the number of people responsible for final assembly. At the same time, they also need to improve the tools used by carpenters so that they can learn to make accessories strictly according to the specified length.

...To be honest, this is really not an easy task!”

When he said these words, Li Yuanjia also felt a real headache.

If things were to happen more than a thousand years later, not to mention finding a hundred professional carpenters, but just finding a group of junior high school students, it would only take two months at most, half of which would be used to make them understand the principles, and the rest would be all

Time to learn carpentry.

But in this era, if you want to teach a bunch of rough guys who can't read a word to relearn length units, and then let a guy with only simple training coordinate a hundred... no, it should be said to be two hundred people to form

The difficulty of a complete assembly line is simply unimaginable!

The more people there are, the more difficult it is.

So after listening to his words, Fang Xuanling frowned and said in a deep voice: "Your Majesty, if you put it this way, if you want more people to cause more overturns, wouldn't it still take a long time?"

"No, it's different."
Chapter completed!