Everyone walked quickly through the forest, the shelling of the Chinese army continued, Yang Maode and Murong Xue stopped, stood side by side, and looked at the flashing red light in the distance. Yang Maode peeked at Murong Xue, and against the backdrop of the flash of artillery fire in the distance, the contours of her face were outlined to be extraordinarily beautiful.

At this time, Yang Maode was completely immersed in happiness, he only hoped that she would stay by his side for a little longer, and did not think about it more.

Yanjing, Jurentang, Huaxia Federal Presidential Palace, West Wing.

…… She was staggering and dirty, and the dress she wore in the morning was brand new, snow-white, trimmed with dreamy lace, but now stained with muddy water, and several strands of lace were torn and hung on her body like rags.

Her round little pink face was flushed with the red tide of crying, and her eyes, which were struggling to squeeze out of her swollen eyelids, looked pitiful and indignant, and her eyes were full of tears, and she tried not to let them fall under the astonished gaze of the people.

The servant, who was trimming the flowers and plants in the garden, saw the filthy little princess come in crying and frightened away the scissors in her hand.

"Your Royal Highness Princess......" He couldn't even speak, and hurriedly turned around and ran towards the main house. He staggered and staggered, and the straw hat on his head had already flipped to the ground.

Tears blurred her vision, and a heartbroken Eleni unconsciously stepped on the usually well-cared little flower, and wept in the direction of the side hall, and when she entered the house, the servant was still out of breath, anxious and speechless, and pointed out at Emperor Ruprecht I and the Empress.

Her cry caught the attention of the nervous and somehow Emperor couple, who were stunned for three seconds when they saw their beloved little daughter stirring in the garbage, while the Empress put her hands over her mouth and screamed loudly.

The emperor came to his senses, hurriedly rushed to his little daughter, knelt beside her, and hugged her tightly in his arms, despite the expensive military uniform on his body.

"My little darling, what's going on? Who bullied you? Tell Daddy. As a father, his heart was so painful that tears almost burst out of his eyes.

The queen also wanted to go over and hug her daughter, but the scene of seeing her clean and beautiful daughter go out in the morning was still deeply imprinted in her mind, and in less than half a day, she came back with this appearance, which was too great for her as a mother, and her feet were so soft that she couldn't even move.

Screams were heard, and a crackling sound came from the third floor, and in a few moments, Eleni's brother Henry flew down and reached the first floor, and when he looked at his family for unknown reasons, his half-brother Rudolf Schran went downstairs and walked to him.

Neither of them was too tall, but compared to Henry's burly and strong, Rudolph looked relatively thin, with a handsome and clean face with a bookish air, exuding aristocratic laziness, and a pair of electric eyes that fascinated the female surname looked at Eleni, who was held in her father's arms.

Seeing Henry help his immobile mother to Eleni's side, he immediately walked back to him, pinched his nose, and gave her a flattering look.

Henry, who was beside Rudolph, suddenly burst out with a pop, and immediately attracted four eyes sharper than a kitchen knife in front of him, which frightened him and quickly covered his mouth.

"You're really not favored." Rudolph teased Henry in a whisper.

"Less wordy." Henry said angrily, "What's there to compete with an eight-year-old child?" ”

Everything, the love of the parents, including the expressions of the brothers, is so familiar and kind.

Suddenly, everything around me began to blur.

"Don't! ......" Eleni screamed, and the dream vanished.

She jerked straight up from the bed, only to realize that her pajamas were soaked with sweat.

Eleni looked around, and the feeling of loneliness enveloped her once more.

It had been many days since she had been taken captive to Yanjing, and although the Chinese political axe had given her due courtesy, the princess, and did not treat her as a prisoner, and let her live with the "first family" in the presidential palace in Jurentang, and her due freedom was also guaranteed, she still felt inexplicably uncomfortable.

And loneliness.

Although it was not very good in the Soviet Union, at that time, she still had Becker...... The door slowly opened, and the light from the hallway outside let in.

"Your Royal Highness, what's wrong with you?" A voice asked, speaking standard German.

Eleni was about to vent at the incoming person, but when she heard who was speaking, the swear words that came to her mouth suddenly stopped.

It was Yang Shuoming's voice.

"May I come in?" Yang Shuoming asked politely, his voice revealing a hint of tenderness and love, and his father, Emperor Ruprecht I, spoke to her like this.

"Please come in." Eleni said softly.

The door opened, and the lights in the hallway went out, and darkness fell again, and in the midst of Eleni's astonishment, a soft light lit up.

Elenia looked at Yang Shuoming who walked in in surprise, her beautiful eyes widened, and her face was full of disbelief.

Because that light came out of Yang Shuoming's hands.

Yang Shuoming didn't hold anything in his hand, he just raised his hand slightly, holding a ball of light in his hand, and walked towards her with a smile, like a magician.

"At night, everyone sleeps, and the lights are too bright, which affects the rest of the people." Yang Shuoming noticed the look of surprise in the eyes of the German princess, and said with a smile, "I think this can be better." ”

"You're amazing." Eleni sighed.

"Hehe, this is just a small application of Dr. Tesla's wireless power transfer technology." Yang Shuoming said, gently placing the ball of light in his hand on the table, then pulled over a chair and sat down not far from Eleni's bed.

"If you can't sleep and don't mind, we can talk." Yang Shuoming said.

"Yes, Mr. President." Eleni nodded reservedly, but the corners of her mouth couldn't help but show a smile.

"Was it just a dream? Are you homesick again? Yang Shuoming seemed to see through what she was thinking, and asked softly.

"Hmm." Yeleni nodded vigorously, "I just dreamed of my parents and brothers, it was when I was a child......"

"I'm sorry." Yang Shuoming said sincerely, "I promise you that you will be able to return to Germany as soon as possible and reunite with your relatives." ”

"I'm afraid it's going to be when the war is over, right?" A hint of melancholy flashed in Eleni's eyes, "I don't know how many years this war will be fought." ”

"I promise, the war won't last long, and you'll be home soon." Yang Shuoming said.

"Forget it, Mr. President. Don't comfort me, I know as well as you know that this war will not end anytime soon. Eleni shook her head and said.

"Tell me what you think, maybe we'll find a way to end the war as soon as possible." Yang Shuoming cast an encouraging glance at her.

"I've never been to China before, so I don't know about China, but this time, I saw China far beyond my imagination." Eleni looked at the ball of light on the table and said softly, "The development of science and technology in China is on par with Germany, China's cities are as beautiful, neat and clean as Germany's, the Chinese people are as rich as the German people's lives, and the appearance of the Chinese team is also similar to the German team." The weapons equipped by the Chinese [***] team are as advanced as the German [***] team. I used to think that the combat effectiveness of the German [***] team was the strongest in the world, but now it seems that the combat effectiveness of the Chinese [***] team is not weaker than the German [***] team......"

Yang Shuoming listened to the girl's story quietly and did not interject.

"After coming to Yanjing, I found out that China is probably ahead of Germany in many places......" Yeleni retracted her gaze from the light ball and turned to Yang Shuoming, "Germany is the most powerful country in Europe, China is the most powerful country in Asia, and the United States is the most powerful country in the Americas. I think you understand that. ”

"You're absolutely right, Your Highness Princess." Yang Shuoming smiled and nodded, "But in my opinion, what you just said is precisely the reason why this war will not last long. ”

"Why do you say that?" Eleni's eyes widened again.

"For the two warring sides, who are evenly matched, now that they understand that if they continue to fight, they will only lose both, then it is natural for them to consider the possibility of a truce in the form of peace talks and compromises." Yang Shuoming said, "It's much better to give each other a step and live together than to go to destruction together, isn't it?" ”

Eleni understood what Yang Shuoming meant, and a hint of joy flashed in her eyes.

"However, as far as I know, Germany has been developing an extremely destructive 'ultimate weapon', hasn't it?" Yang Shuoming smiled and asked.

Hearing Yang Shuoming's question, Elenia suddenly became nervous. She looked at Yang Shuoming vigilantly, waiting for his next step.

"Please rest assured, Your Highness the Princess, you are my guest, and I will not force you to do anything that is not good for your motherland." Yang Shuoming said with a smile, "What I want to tell Her Royal Highness is that China has also been committed to developing such a weapon, and has achieved great success, and I believe that it will soon be put into actual combat." ”

Elenie instinctively wanted to say, "This can't be!" But when she recalled the mysterious flying saucer that carried her to Yanjing, she suddenly understood that the Chinese president in front of her did not lie to her.

Even with Germany's advanced technology and the development of saucer-shaped aircraft began very early, until now, no similar flying saucer has been manufactured!

"Well, it shouldn't be a few days before our country's first atomic bomb test will be conducted in the desert, and I hope that Her Royal Highness will be able to join me to watch the highest achievements of our country's science and technology." Yang Shuoming officially sent an invitation to Eleni, "How is it?" Would you like to go? ”

"That would be my pleasure." Elenie thought for a moment, then nodded decisively.

"Great." Yang Shuoming turned his head to look at the clock on the wall, "It's not early, I won't disturb Her Royal Highness the Princess's rest." He stood up, walked over to the table, and gently picked up the ball of light.

"Good night."

"Good night."

Yang Shuoming nodded goodbye to Eleni, and then walked towards the door.

Eleni looked at Yang Shuoming's back in a daze, and when he walked to the door, Eleni suddenly stopped him.

"Mr. President!"

Yang Shuoming turned around and looked at her, still with a gentle smile on his face.

"Mr. President, I wonder, will you approve the use of such weapons against Germany?" She asked eagerly, her breathing becoming rapid.

"My youngest daughter, about the same age as you, Your Highness the Princess." Yang Shuoming understood what she was worried about, and replied with a smile, "My feelings for you are the same as for my own daughter. As a father, his greatest wish is to hope that his daughter will live happily. How could I possibly do anything to destroy her world? ”

"Can you swear?" A faint flush appeared on Eleni's face, and she lowered her head a little embarrassed, "I know, my request is rude, but I still hope you can give me a guarantee......"

"Of course, I swear." Yang Shuoming smiled and nodded.

"Then I also assure you that I will definitely prevent Germany from using the same weapons against China, although ...... I think you also know that Germany does not have such weapons now......" Elenie said as she bit her lip and looked up.

"Thank you, Elenie." Yang Shuoming looked at the girl sitting on the bed, and knew in his heart that he had achieved his goal.

Hearing that instead of addressing herself as "Her Royal Highness the Princess," she called herself by her name like a father, Elaine laughed happily.

"Thank you, Mr. President, too."

"Sleep." Yang Shuoming smiled and waved at her.

"Hmm!" She smiled and waved at him, watching his figure disappear. Then sweetly fell asleep.

Physics Laboratory, Columbia University, USA.

Experiments on atomic energy are currently underway here.

"Let's get started!" Seeing that everything was ready, Fermi waved his hand and ordered the experiment to begin.

Since experiments done at Columbia University and other universities in the United States confirmed Fermi's hypothesis that neutrons are released during fission, the chain reaction is theoretically achievable, the difficulty is that the neutrons released during uranium fission are too fast to effectively initiate the fission of other uranium atoms; Then there are the neutrons produced by fission that escape in all directions, most of which escape into the air or are absorbed by other substances before they have a chance to work. If the chain reaction is to be realized, the neutrons must be moderated and their escape must be greatly reduced, so that the ratio of the number of neutrons in fission to the number of neutrons in the previous generation (k-coefficient) is greater than 1, so that the chain reaction can continue.

Neutron deceleration is Fermi's old skill, and when he was working at the Royal Italian Academy of Sciences, he used paraffin, water and other substances to conduct neutron deceleration experiments. But after several experiments in the Columbia University laboratory, Fermi found that water and paraffin absorbed too many neutrons with hydrogen, so Szilard suggested using carbon as a moderator, because carbon atoms also slow down neutrons, and as long as they are very pure, they absorb fewer neutrons than water or paraffin (impure carbon has an amazing ability to swallow neutrons). Together, Fermi and Szilard came up with what they thought would create a chain reaction: layering pure graphite bricks on top of each other with graphite bricks embedded in uranium blocks, in other words, a "heap" (for which Fermi and Szilard jointly own the patent rights to the nuclear reactor). But no one knows how big the pile should be, how many layers it should have, whether it should be square, round or conical. Of course, the answers you want can be obtained through experiments, but the difficulty is that the United States at that time had only a few grams of uranium, and there was no graphite of the required purity.

The purchase became a major task, and Fermi pushed it to Sylard, who had many high-ranking friends in the United States. The U.S. Army and Navy provided Fermi with an initial $6,000 grant to purchase materials, and by the beginning of the spring several tons of high-purity graphite had begun to arrive at Columbia University's physics department building, where Fermi and his assistants became masons and built the bricks themselves. They know very well that there won't be enough uranium to try to build a reactor in a few months, maybe years, but that's not a problem for the time being, because they themselves don't know the nature of uranium, and they don't even know its melting point, and they still have a lot of research on graphite and neutrons to do before they can recommend that the "uranium advisory board" invest huge money and energy in the reactor.

The trial proceeded slowly due to insufficient materials. By the spring of 1941, Fermi and his team had built a small reactor, and they had cut out some graphite bricks, dug small holes in them, put uranium blocks, and put them back in. As more and more pure graphite was sent to Columbia, the reactor grew taller and taller, reaching the ceiling in the fall of that year, but it was still far from meeting the requirements of a self-sustaining chain reaction, with too many neutrons absorbed or escaping, requiring larger rooms and higher ceilings. Fermi sent his assistants around New York in search of such a house.

On 6 December, shortly after Bush, the leader of the "uranium program," announced his decision to "go all out for atomic energy research," Fermi was informed that he, his group, his equipment, and all kinds of materials he had collected were to be moved to Chicago, because Professor Compton, president of the American Physical Society and Nobel laureate at Columbia University in Chicago, was appointed to be in charge of basic physics research on chain reactions, and Compton decided to move all his work to Columbia University. Compton also commissioned Westinghouse Electric to manufacture 3 tons of pure uranium, and the National Bureau of Standards and Union Carbide to manufacture the required pure graphite.

(To be continued)