Because of the double temptation of Xiushi and 100,000 snowflakes of silver, until the winter solstice, the Jingshi University Hall recruited a total of twenty talents and geniuses with talents in mathematics, physics and chemistry.

There are many students with good family backgrounds among these people, but they are faintly headed by the poor Zhao Doumi, obviously Zhao Doumi's personality charm is neither humble nor arrogant, and has won the recognition of all students.

On the day of the winter solstice, Zhu Shun decided to accept Zhao Doumi as an apprentice, called the three elders in the family, and simply drank a cup of Jingshi tea and it was over.

The hall of Beijing Normal University is controlled by Wang Zheng and Zhang Tao, the bigwigs of the Ming scientific community, and the General Administration of Beiping Machinery is under the management of Chen Qu, a junior engineer, and constantly pays off debts.

Zhu Shou, the owner of the factory, is working hard to expand the business of Zhu's spinning factory, and Zhu Zhongren, an outsider, is burning cement that can earn two hundred taels of silver a day.

Zhu Shun, who had arranged everything, put all his mind on the study of the second-generation Watt steam engine, and the first problem to be solved was the exchange of condensate.

The thermal efficiency of the first generation of Newcomen steam engines was very low, and after the steam entered the piston cylinder from the egg container, cold water would be sprayed into the piston cylinder in order to make the piston cylinder vacuum.

In this way, a lot of heat energy will disappear, and the heat energy needs to be raised again with coal, which not only wastes a lot of coal, but also makes the thermal efficiency of the first generation of steam engines very low.

Zhu Shun is now trying to change the condensation method of the first generation of steam engines, as long as the condensation method is changed, it can save a lot of coal while improving the thermal efficiency.

Otherwise, the first generation of steam engines can only be used in coal-producing areas, and in mines that do not produce coal, the price of a pound of coal is already high, and how much coal is consumed, the mining cost will increase greatly.

Zhu Shun thought about it for so long, and he was almost a little brows, but there was another key point that he couldn't figure out, that is, how to separate the condensation method.

Unable to figure it out for the time being, Zhu Shun left his dedicated laboratory and walked from the back gate of the Jingshi University Hall to the fence courtyard.

The new Kyoshi University Hall was built, and the fence courtyard, which witnessed the birth of many things, was not demolished.

It's still there, but only Zhu Shun and the four disciples and two lecturers can enter, and the others can't go in.

Gradually, this place has become the most desirable place for the students of the Jingshi University Hall, because only those who have become the disciples of the mountain chief are eligible to enter the fence courtyard.

As early as a month ago, it snowed heavily in Kita-Naoli, and the plains once again turned into endless snowfields.

Not long after Zhu Shun walked out of the back gate, he heard a loud 'boom' from the fence yard.

This time, the explosion was louder than usual, even louder than the sound of the Hongyi cannon firing, and Zhu Shun quickened his pace and walked over.

On the snowfield behind the fence yard, there is a black crater after the explosion, which stands out on the plains covered with white snow.

The second disciple Song Shiyi stood next to a wooden shelf and cheered, and kept shouting that it had been successful, and the third disciple was full of fanaticism.

The eldest disciple Song Shihui squatted not far away, smoking a dry cigarette one by one.

Zhao Doumi, the newly recruited fourth disciple, also laughed, but there was something placed beside him.

Zhu Shun was a little shocked when he saw the things around the fourth disciple Zhao Doumi, but he didn't expect that the important weapon of the country in the era of firearms would appear.

A counterweight rod more than four meters long is tied to a conical bullet.

It's just that this conical bullet is much larger, about one meter long and one meter wide, and the overall presentation is a perfect streamline.

The name of this thing will be famous in the future, and it will be famous for its murder.

Rocket.

Zhu Shun really couldn't help but be shocked, just when was the rocket invented, more than a century earlier than Europa.

The Royal Navy of England used this rocket, and with only 25,000 of them, razed the capital of Denmark, or razed it to the ground.

Zhao Doumi heard the movement behind him, turned around and saw his teacher, who was quite impermeable, and saluted respectfully: "I've seen my teacher." ”

Zhu Shun walked over, stroked the rocket, suppressed the shock in his heart and asked, "You invented it." ”

Zhao Doumi replied respectfully: "It was invented by the apprentice, but it is just a series of modifications based on the rocket slip invented by the ancestors, so that the rocket slip is more in line with the aerodynamic principle." ”

Surname Zhao, return to the ancestors?

When Zhu Shun saw the ninety points of the test, he knew that he had picked up a treasure, but he didn't expect to pick up a treasure: "Your ancestor is Zhao Shizhen?" ”

Zhao Doumi nodded and replied respectfully: "Yes, teacher, Zhao Sheren is the ancestor. ”

Zhu Shun was affirmed, and the excitement in his heart could be imagined how intense it was, but he just patted Zhao Doumi on the shoulder and took away the fire fold in his hand: "What is the range." ”

Zhao Doumi also tested this kind of rocket that has been reborn for the first time, shook his head and said: "I don't know, this new rocket has not been developed for a long time, and today is the first test launch." ”

Zhu Shun had only touched all kinds of firearms before, and had never played with rockets, not to mention that he ignited the rocket with a fire fold.

Hearing only a 'boom', the rocket quickly flew out under the impetus of gunpowder, drew an arc and landed in the distance.

"Boom!"

Zhu Shun felt that the ground shook, and the moment the rocket landed, a violent explosion occurred.

The snow on the ground was blown away in an instant, and a lot of black dirt splattered out, leaving a deep crater.

When Zhao Doumi came over, he took a tape measure, and Zhu Shun asked him to stand here with the end of the tape measure and measure it himself.

The tape measure is only 50 meters, and every 50 meters is marked and measured from the mark, a total of six markings.

Four hundred meters!

It reached 400 meters.

Zhu Shun was worried that the arms company did not have the heavy weapon for the finale, but he didn't expect Zhao Doumi to bring such a big surprise, it was no longer a heavy weapon, and it was directly a national heavy weapon, and the range reached 400 meters.

Zhu Shun can imagine the salvo of hundreds of rockets, if it is replaced by thousands of rockets, this picture is estimated to be recorded in history.

Zhu Shun took a breath of the cold wind, suppressed the heat in his heart, and asked, "Doumi, this kind of rocket skate hasn't been named yet." ”

Zhao Doumi's ability to observe words and emotions is more sophisticated than Zhang Tao, who has been in the officialdom for most of his life, and when he saw his teacher's expression, he was accompanied by such a sentence.

Zhao Doumi instantly understood: "Please also ask the teacher to give the name." ”

Zhu Shun looked at the two deep pits in the distance, thinking about the power and range of the rocket, and gently spit out four words.

"Dongfeng Type 1."

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