After consultation at Tai Hospital, Mei Chun did not hurt her internal organs.

The left forearm was fractured, the elbow was dislocated, two ribs were broken, and there was a large scratch on the cheek. In general, they were all injuries.

Zhu Qizhen felt relieved now. He was lucky to still be alive and kicking after falling from a high altitude.

"Flying here from Nanjing, you don't want to die?"

With a guilty smile on her face, Mei Chun said: "On a whim, the student shocked the Holy Master. I hope the Emperor will forgive me!"

"Okay, don't say anything anymore!"

Zhu Qizhen waved his hand and said: "I will find you a place to live, so you can rest in peace and recover. Next..."

Mei Chun was about to thank her, but found that the emperor suddenly stopped mid-sentence.

He was a little confused, but he didn't know what to do.

"Wait, wait! Wynn, keep an eye on him!"

Zhu Qizhen dropped a word and left in a hurry.

Mei Chun scratched her head, but accidentally pulled the wound on her arm, and she grimaced in pain.

Hua En hurriedly stepped forward and said, "Mr. Mei, what's wrong with you? Let's go and fetch the imperial doctor for you!"

"No need, no need!"

Mei Chun hurriedly waved her hand, and then asked: "Excuse me, father-in-law, what does the emperor mean by this?"

Wynn shook his head helplessly and said, "Our family doesn't know either."

After about a cup of tea, I saw Zhu Qizhen dragging Beilin over and hurriedly came.

"That's the person!"

Zhu Qizhen reached out and pointed, and Beilin stepped forward with curiosity on her face and asked: "Can Kongming lanterns really carry people?"

Mei Chun nodded dullly, and just as he was about to reply, Beilin asked impatiently: "How to control the ascent height and flight direction?"

"this……"

Mei Chun hesitated for a moment, then said: "Actually, it is to enlarge the folk Kongming Lantern ten times, heat it with lamp oil, and then it can rise. When it needs to land, it can be extinguished. As for the direction... students don't know how to control it for the time being. It depends on the wind direction.

However, the wind direction at high altitude is very different from that on the ground. The air currents move back and forth, and where you fly depends on luck."

Beilin asked again: "What material did you use?"

"The top is made of cowhide and the bottom is made of rattan."

“Is the production process difficult?”

"It's not difficult...hiss!"

Mei Chun shook his head slowly, but since there was a wound on his neck, he couldn't help but grin.

"...The cowhide needs to be made of high-quality material, and the joints need to be sewn tightly, and there is nothing else."

Beilin turned around and said: "Your Majesty, it can be done!"

Zhu Qizhen nodded and said: "Without further delay, we should immediately set up a Kongming Lantern Research Institute and rush out a batch of samples to see what the effect is."

"yes!"

Beilin turned around and left, walked to the door, then turned back and said: "The Academy of Sciences has moved to the new base in Xishan. This person's injury..."

"Carry it to the Western Mountains and raise it, you are responsible for it!"

Zhu Qizhen did not hesitate at all and was not willing to wait even for a second.

Because he has realized the strategic value of the manned sky lantern created by Mei Chun.

The average altitude of Uzang is more than 4,000 meters. Conventional combat methods are difficult to work. Even if you win in the end, you will pay a huge price.

But, who said we have to attack from land?

"yes!"

Bei Lin hurried down to make arrangements, but Mei Chun was a little confused and confused.

Zhu Qizhen explained: "The Qing family will suffer a little. We will go to Xishan to recuperate first, and we will be mainly responsible for the guidance work in the early stage."

"ah……"

Mei Chun was even more confused, with questions all over her face.

Seeing this, Zhu Qizhen asked, "What questions does the Qing family have?"

Mei Chun thought for a long time and then said: "To report to the Emperor, the student missed the Spring Festival..."

"Why don't you show off? Go directly to the Academy of Sciences for appointment!"

Zhu Qizhen waved his hand at him. For such a talented player, he should have been admitted under special circumstances.

Mei Chun said cautiously: "Isn't this... inappropriate?"

"Aren't you a member of the Yingtian Mansion?"

"yes……"

"It's enough to promote people. Besides, the Academy of Sciences is different from other yamen. Even if you don't have a reputation, you can still serve!"

Mei Chun wanted to ask something else, but when she saw the emperor's impatient look, she swallowed the words as they came to her lips.

Then, he saw a group of people rushing in, carrying a stretcher...

The Kongming Lantern Research Institute of the Academy of Sciences was urgently established at the new base in Xishan.

The person in charge of the institute is Mei Chun, and its members are all capable people selected by Beilin.

Even Beilin herself took a break from the power laboratory and devoted herself wholeheartedly to the research and development of Kongming lanterns.

In fact, the manufacturing process of Kongming lanterns is very simple. Folk paper can be used to make them. The Kongming lanterns made by the Academy of Sciences have other uses and require leather.

Soon, most of the cow hides on the market were wiped out. When the cow hides were gone, sheepskins and even dog skins were bought. In the end, even the old stores selling donkey hide gelatin were cut off from supply.

Next, is the key to this research, high-altitude air flow.

The ancients began to study the weather very early. When Mei Chun was copying ancient books, he found many similar books.

For example, Zhuangzi during the Warring States Period proposed that the formation of wind comes from the influence of air flow, and mentioned that sunlight and wind can evaporate water, further affecting the size and direction of the wind.

In the Qin Dynasty, a relevant legal system was formed, and each place must report rain conditions to the court, as well as the area of ​​​​the sky and earth affected by rain or meteorological disasters.

In the Han Dynasty, during the period of Emperor Wu of the Western Han Dynasty, the "Twenty-Four Solar Terms" were incorporated into the "Taichu Calendar" as a supplement to the calendar to guide farming, and the Guibian photometry method was used to determine the solar terms in the Yellow River Basin.

The Eastern Han Dynasty philosopher Wang Chong's book "Lunheng" pointed out that the formation of thunder and lightning is related to the heat of the sun and the season, and that thunder is caused by explosions. Ying Shao's "Customs and Customs" proposed names such as plum rain and trade wind.

During the Three Kingdoms period, people further understood the relationship between solar terms and the movement of the sun. The "Zhou Bi Suan Jing" annotated by Zhao Junqing introduced the "Seven Balances and Six Rooms Diagram", which theoretically explained the relationship between the twenty-four solar terms and the movement of the sun.

During the Jin Dynasty and the Jin Dynasty, the "Wind-Xiang Wooden Bird" and instruments for measuring wind direction were popular. Jiang Ji pointed out that the floating clouds close to the ground can reduce the visual distance between stars when the stars rise, and make the sun appear red in the morning and evening.

"Fengtu Ji" puts forward the concept of Meiyu.

Jia Sixie of the Northern Wei Dynasty's "Qi Min Yaoshu" fully discussed the impact of meteorology on agriculture, and proposed methods of using smoke to prevent frost and using snow to kill insects and preserve moisture; the calendar of the Northern Wei Dynasty, "Zhengguang Li", included the seventy-two climates in

The almanac; "Jingchu Years' Notes" by Liang Zongmao of the Southern Dynasties, divides the coldest and hottest seasons of the year.

During the Sui, Tang and Five Dynasties periods, Wang Bing divided the climate of the Central Plains according to regions. Du Taiqing's "Jade Candle Book" excerpted the solar terms, government orders, farming affairs, customs, allusions, etc. contained in various books before the Sui Dynasty, and preserved a large number of lost agricultural meteorological texts.

, Li Chunfeng's "Yi Ji Zhan" records the structure, installation and usage of the wind measuring instrument.

In the Song Dynasty, the understanding of meteorology was richer and more detailed, and the prediction and calculation of rain and snow were more accurate.

Shen Kuo, a geographer of the Northern Song Dynasty, wrote "Mengxi Bi Tan" about meteorological matters such as Emei Baoguang, lightning, thunder axe, rainbow, Dengzhou sea market, horn whirlwind, bamboo fossils, tile frost painting, the shape of hail, and the method of boating.

, vertical climate zone, weather forecast, etc.

"Nine Chapters of the Shushu" written by Qin Jiushao of Shaoxing Jiu in the Southern Song Dynasty listed four formulas for measuring rain and snow, explaining how to measure the depth of rain and snow on flat ground.

Then go to the book "Tian Jia Za Zhan" written by Lou Yuanli in the late Yuan and early Ming Dynasty. It is divided into three volumes: the first, middle and second volumes. The first volume covers the first month to the twelfth month, and records the horoscopes according to the day every month. The middle volume is divided into three volumes:

Celestial phenomena, that is, the sun, moon, stars, atmospheric optics and changes in clouds, etc.; physical phenomena, that is, birds, beasts, grass, trees, fish, mountains, water, tides, etc., are classified into categories, and a large number of weather and meteorological proverbs are used to predict the evolution of weather and climate.

Changes and agricultural prosperity. The second volume is about the third year of the year, Liujia, climate, auspiciousness, auspiciousness and so on.

There are more than 500 descriptions in the book. For example, if the ground is very wet and water droplets spread out, it means heavy rain; if the northwest wind blows away and there is no rain; when the parasol flowers first grow, red means drought, white means water; and so on.

These records reveal some laws of weather and climate change from different aspects, most of which are scientific and accurate to a certain extent. They also quote a large number of exquisite proverbs, such as "Although the wind blows up, the wind does not disperse, and the main rain will fall." That is, the clouds in the upwind direction.

Although they have dispersed, the clouds in the downwind direction have not dissipated, indicating that it will rain. The movement of clouds is used to illustrate the amplitude convergence of upper air currents. The method is ingenious and the conclusion is correct.

The greatest value of this book is that it not only records the weather, but also systematically explains the formation of convective weather. It proposes the original principle of wind, which is believed to be that solar radiation heats the ground and causes airflow to rise, which is called wind. It also records sea breeze and land breeze.

, typhoons and other weather averages and annual and daily range calculation methods, atmospheric light phenomena and other atmospheric phenomena.

After copying a large number of ancient books, Mei Chun summarized a complete set of experiences related to air convection and recorded it in a book based on the experience of his predecessors.

During the few days he was floating in the sky, he was not idle either. His main task every day was to record.

In this way, he is the first person in history to personally measure air convection.

After arriving at Xishan, Mei Chun was mainly responsible for technical guidance due to injuries on her body and limited mobility.

Beilin personally led a group of people to study air flow and how to control the height and orientation of the sky lanterns every day.
To be continued...