Faced with a four-wheeled vehicle that could bring about a transportation revolution, Xu Guangqi was excited. He kept asking Zhu Youzhen about the principle of flexible steering of the four-wheeled vehicle.

Faced with Xu Guangqi's excited questioning, Zhu Youzhen did not feel anything worth being excited about. He understands Xu's excitement as a scientist's normal reaction to seeing something new. He turned the four-wheeled vehicle as a matter of course and explained it to Xu Guangqi briefly.

It sums it up simply. The whole two-wheeled vehicle is equivalent to two groups of two-wheeled vehicles connected together by a steering disc.

Xu Guangqi understood the principle of the car as soon as he heard it, and what surprised him was that after listening to the description of Xinwang, Xinwang also designed a very simple friction brake device, which was also not available in previous vehicles.

Seeing Xu Guangqi's surprised expression again, Zhu Youzhen felt in his heart, is it necessary to make such a fuss?

What should I do if I get into an accident without braking and going too fast? In my previous life, it was a tractor with brakes!

"It's so rare and weird!" Zhu Youzhen secretly despised Xu Guangqi in his heart.

Zhu Youzhen is right, Xu Guangqi has really never seen a brake device.

Ancient Chinese carriages had no brakes, and the brakes were all braked by the coachman by manpower. is what Guo Degang said, brake by the friction coefficient between the feet and the ground.

In this four-wheeled carriage, Xu Guangqi really felt King Xin's whimsy, and he was impressed by King Xin's whimsy.

"It's really good that these ideas of King Shin can open a door to me that I never thought of, just like the Western ideas brought by the Christian priest Matteo Ricci. God loves the world. ”

Thinking of the teachings preached by his deceased friend Ricci, Xu Guangqi was extremely emotional. To put it a somewhat blasphemous way, "His Highness is a bit like a prophet in Christ!" ”

Xu Guangqi's fame in the history of Chinese Christianity goes far beyond his status as a scientist.

HE WAS BAPTIZED BY CHRISTIANITY AS EARLY AS THE 31ST YEAR OF WANLI AND HAD THE WESTERN NAME OF PAUI.

In the history of Chinese Christianity, he is known as the Three Masters of the Holy Religion along with Li Zhizao and Yang Tingyun.

As a devout believer, Xu Guangqi has been working hard to promote Christianity in China.

It was under his influence that Matteo Ricci was able to open up the situation in China and formalize the expansion of the church's influence by relying on the transmission of Western natural sciences to attract the scholarly class to the church. This is the right missionary strategy.

The situation that Xu Guangqi and Ricci worked so hard to open up was ruined by Matteo Ricci's illness.

After Matteo Ricci's death, radical missionaries ignored China's national conditions, and their missionary methods ruined Ricci's efforts.

In the 44th year of Wanli (1616), the Nanjing Church took place, and the spread of Christianity in China was greatly affected, and most of the missionaries were expelled to Macao.

Since then, missionaries have not been able to carry out normal missionary work in China. It was not until the first year of the Apocalypse that the missionaries returned to Beijing with the help of Xu Guangqi's power.

To a certain extent, Xu Guangqi was not allowed to be reused by the Ming court, which also had a certain relationship with his beliefs.

For how to promote Christianity? Xu Guangqi has always believed that if any doctrine wants to be promoted in China, it must be approved by the royal family, otherwise it will be difficult to succeed in proselytizing.

Unfortunately, the missionaries never had the opportunity to pass on the true doctrine of Christianity to the emperor.

Today, Xu Guangqi suddenly felt that King Xin, who also belonged to the royal family, seemed to be a good choice.

"Your Highness, I wonder what you think of the missionaries from Tessie?" Xu Guangqi asked cautiously.

"Missionary?" Zhu Youzhen was stunned for a moment, and then realized that Xu Guangqi should be asking about the Christians from Europe who spread their faith.

He was not religious, but he had no particular opinion of them.

Zhu Youzhen pondered for a moment and decided to tell the truth. "I don't have any special opinion about them. Does Mr. Xu know them? Zhu Youzhen said bluntly.

"Zi first looks at the prince, and the prince often has wonderful ideas. Those missionaries from Tessie have some expertise in strange skills and tricks, and may be of some help to the prince. Xu Guangqi didn't dare to directly talk about faith, so he could only make a recommendation from the technical aspect.

"That's right," Zhu Youzhen thought to himself, "should we talk to a few missionaries and see what era Europe is now?" How far have they come? Didn't Sun Tzu say that a confidant must also know the other, so that he can not be defeated in a hundred battles. ”

Thinking of this, Zhu Youzhen said briskly: "Then there is Mr. Lao Xu." Can you help me find some missionaries, I really want to see what they look like. ”

Xu Guangqi was a little speechless for a while, "Hehe, what King Xin said is really straightforward." Is it just to see what the missionary looks like? However, this is the first reaction of ordinary people to the Tessie. ”

"I just hope that the church will have a versatile, mature missionary. Don't be stunned. If the first impression is bad, it's troublesome. Xu Guangqi thought worriedly.

Zhu Youzhen didn't know that Xu Guangqi still had the identity of the church, and he suddenly recalled the question that Xu Guangqi had just asked about the steering system of the four-wheeled vehicle.

"It can't be the current four-wheeled vehicle, which doesn't have a steering function, right?" He was particularly surprised.

"Mr. Xu, I see that you pay special attention to the steering system of this carriage, don't you have any other cars? So how do they turn. Zhu Youzhen couldn't help his curiosity and asked Xu Guang to inspire.

Xu Guangqi was also a little surprised, "Why doesn't King Xin even know this common sense?" Thinking about the identity of King Xin, he found it not surprising.

Xu Guangqi patiently explained the difference between a four-wheeled vehicle and a two-wheeled vehicle. His explanation confirmed Zhu Youzhen's speculation.

In this era, there are really no four-wheeled vehicles with steering systems in China.

"Oh, that's nice." Zhu Youzhen couldn't close his mouth with a smile on his face, "It's another good way to make a fortune, I want to make full use of it." He thought to himself.

Xu Guangqi felt that King Xin was a little strange, was what he said funny?

The two entered the Huangzhuang together.

Zuo Yuzhu, who heard the news, presented the revised potato planting manual with both hands.

After a brief look at the planting manual, Zhu Youzhen was very satisfied this time.

In this draft, Zuo Yuzhu basically used vernacular. According to Zhu Youzhen's meaning, punctuation marks are added throughout the book to prevent misunderstandings.

Zhu Youzhen handed the manuscript to Xu Guangqi and said casually: "Not bad." Xiao Zuo, you did a good job. The king will reward you with 50 taels of silver, and you will divide it among yourselves. You work harder, hurry up again, and change the planting manuals for sweet potatoes and corn according to this standard. The orphan will arrange for printing and publishing together. ”

Zuo Yuzhu fell to his knees with a grateful "plop", and kowtowed again and again: "Thank you for your love, the little ones are grateful." ”

Looking at his excited reaction, Zhu Youzhen was a little confused. "Did I say something wrong? Xiao Zuo shouldn't be excited about 50 taels of silver, right? Or maybe it's because of the publication? Cut, it's too small, I haven't seen the world. ”