"Maybe it's just that the telegram is too simple, continue to monitor this channel, intercept the content, and report it at any time."

"Team leader, Chu Aiyun said, we have to dive in two hours, so we can't continue to monitor."

"I'll talk to the captain, we have to stay at sea for the last two days, maybe we have to go to Tokyo Bay, you just have to follow it."

Lin dropped a sentence and went out, and his intuition told him that 419 had better stop on the sea for a long time, at least to listen to the telegrams exchanged from all sides, and 1 minute ago, a hint of foreboding suddenly sprouted from the bottom of his heart. Shuping's interpretation of Sato's findings does come to a plausible conclusion that once the disturbance begins, it will not end easily. He had never taken this interpretation seriously before, and at this moment, he felt that it was better to be careful.

It stands to reason that Zorge's group, as a key strategic pawn, should not pay special attention to a figure of Kagesa Zhenaki's level after such a major event as the sinking of Izumo, unless they perceive the existence of factors that may have a major impact on the direction of the war. Another suspicious point is that even if Zorge was able to obtain information about the exchange of information from the base camp and knew the complete list of the seven hundred dead, the Chinese dispatch army did not pay enough attention to Makino and others, so why should he pay special attention? It doesn't make sense at all. Lin pondered the joints repeatedly, but could not get a reasonable answer.

What are the special circumstances that may lead them to ask the CCP for assistance? As far as he knew, during the War of Resistance Against Japanese Aggression, the Soviet intelligence agencies in China were declassified by as many as 12 files after the collapse of the Soviet Union.

419 continued to probe around the Kasuga Maru, Cheng Dayang listened to Lin Xiuxuan's opinion, and promised not to dive under the surface of the sea at night to hide, but after dawn, if he found any potential threats nearby, Cheng Dayang did not guarantee that the submarine would continue to stay on the surface. An air search showed that the Japanese air force stationed in Okinawa and Taiwan often had planes in this area. In addition, according to Shuping's test plan, he also had to perform several underwater maneuvers at large elevation angles to test the resistance of the pipeline to a certain overload, which could not be carried out if left on the sea surface. Cheng Dayang was unimpressed by Lin Xiuxuan's fuss, he felt that it was just caused by the suspicious nature of the guy who was engaged in intelligence.

In the early morning of August 6, dozens of researchers dressed in white were conducting final inspections around a huge cyclotron in the huge underground laboratory of the Faculty of Physics at the University of Tokyo. An elderly man with a beard waits through the glass for the students next door to evacuate. According to the plan, he will start the experiment in 10 minutes.

Theoretical physicist Yoshio Nishina received an annual grant of 400,000 yen from the government to start some cutting-edge research, which is of little value to the war effort, and may be of some help to the Japanese in their quest for the Nobel Prize, but it still needs a certain amount of secrecy.

Of course, even if you hide underground, you can't hide from people's eyes, and once his big machine is activated, people in nearby school buildings will notice that the light bulbs are starting to flicker.

A student walks in and tells Professor Nishina that someone is asking to see him. He thought it was just a faux paser reporter who didn't make an appointment, so he told the student that he was too busy today and asked that person to come back another day. The student hesitated for a moment, then added that the person who came was from the military headquarters. The professor frowned, very unpleasantly called off the particle acceleration experiment, then changed into a suit and prepared to go to the reception room to meet the guy who couldn't pick a day, in his memory, military visitors were always so annoying, always without an appointment, suddenly appeared at the door.

Walking to the door of the laboratory, he remembered something again, and asked the students to go over and find his most proud protégé Chaoyong, so that he would have the bottom of his heart.

He could roughly guess what was going on, and in the past year, Lieutenant General Suzuki Musaku of the military department had several secret conversations with him. The reason was that the intelligence services in Europe noticed that the Germans were carrying out uranium-235 separation work in concealment from Japan, and they felt that it must have some kind of military use. Any scientific research of military value will attract the attention of the military department at the first time.

Yoshio Nishina explained to the lieutenant general in writing and verbally that this kind of * is only theoretically possible, but in practice this kind of thing cannot be manufactured, and the separation of uranium-235 is very difficult, requiring a lot of centrifugal equipment and electricity, which is not possible for the Japanese treasury. Even if it takes many years to build one with exhaustion of national strength, that device will weigh more than dozens of tons and has little military value.

However, it seems that the military is still not giving up, and it will have to spend some precious time today to convince these laymen. This is also the reason why he hopes that Asakaga Zhenichiro will be present, Asaga is eloquent and very good at explaining some details to laymen in simple language, and he thinks he has no such ability.

When Yoshio Nishina walked into the reception room, he found that the person who had come did not know him, and that the person was standing on one side in casual clothes, looking like he had not slept all night.

"Hello Mr. Nishina, please allow me to introduce myself, I am the military adviser of the military department stationed in the Republic of China, Kagezo Zhenzhao."

The visitor bowed deeply.

"Fortunately...... Have a seat. Nishina said slightly.

"I've come to visit Sir this time, and I have nothing to do with this title, but because of something special that may be related to the future of the Empire."

"Oh? What do I suspect will help you? ”

"I just went to the War Department to check the records of General Suzuki's talks with you, as well as several reports that you sent to the War Ministry, mainly on atomic weapons and nuclear power generation."

"It does."

"According to the transcript, you did not think that the atom* was a viable solution, nor did you think that Germany would be able to develop a real combat one*; But I've recently learned some more details that don't seem to be the same as what you came to last time, and I'd love to continue asking for advice on this issue. ”

Kagesa went straight to the point and asked directly about the feasibility of *, he did go to the archives of the Ministry of War last night alone to check the relevant contents, and found that the level of secrecy was not high, so it was obvious that it was not taken seriously, and then he spent 8 hours studying Nishina's report, which was considered to have done his homework. He was confident that he had a preliminary understanding of the principles of this weapon, and interestingly, it could be connected to some of the details provided by Makino, and some of Makino's words seemed to answer some of Professor Nishina's difficult questions. However, his straightforwardness made Professor Nishina feel that the people from the army were becoming more and more self-righteous, and he even directly refuted his conclusions.

"What are the details that make you have such an opinion, I am listening."

Nishina immediately replied without humility or arrogance.

"Based on the accounts of the last meeting, do you think that if you need to produce a chain reaction of neutron multiplication, you need a huge device that even a warship may not be able to carry, let alone a bomber?"

"I don't remember exactly what I said, but that's what it means."

"But according to the intelligence of one of my current informants, in the thirteenth year of the Showa era, Einstein once wrote a letter to Roosevelt, clearly stating the possibility of such a weapon, and the need to study such a weapon."

"It was just a letter written by someone else, signed by him."

"But if he doesn't agree, why sign it?"

"As a leader in the scientific community, he certainly needs to take a positive stance on projects developed using his own theories, and he doesn't agree with that."

There was a pause in the conversation, as if there was some non-speculative atmosphere. Just then, there was a knock on the door, interrupting the awkward scene.

The visitor was not very old, well-dressed and had a pipe in his mouth, but he was very scholarly.

"Oh, you're just in time." Nishina stood up, and Kagesa followed suit, "Let me introduce you, this is my student, Japan's first-class scholar, and he can probably answer your questions." ”

He turned to the young man as he spoke.

"Asagaga, this is General Kagesa from the military headquarters. It seems that the military is still struggling with the matter of atomic fission. ”

Kagesa stepped forward and shook hands with Zhao Yongzhenichiro, and after the three of them sat down, Kagesa took out a small notebook, and he remembered that Makino's conversation record also had this person's name.

"General Kagesa, I just came back from Europe last year, but I know some of the latest information in the academic world, and I think I can answer some things that the military wants to know instead of Venerable Master."

"Please wait a minute, Mr. Asaka," Kagesa continued to look through the records, "I found it, Jonaga Zhenichiro: a nuclear physicist and Japanese Nobel laureate." ”

"What?"

Asaga and Yoshio Nishina were taken aback at the same time.

"Oh, sorry, I probably remember wrong."

Kagesa smiled mysteriously.

"Your Excellency, this is not the time to joke, are we...... Can you get into serious topics as soon as possible? Yoshio Nishina shrugged his shoulders, "Asaga, the general should want to know about the possible size of the so-called atomic weapon. ”

"Well, I do want to know more details."

Asahi didn't know where he found a piece of paper, and then quickly drew two separate balls on the paper, one larger, but with a notch.

"That's the * model that roughly works, it's not very complicated, and together it's a spherical shape. If there is a neutron source that is released under the action of the fuse, the neutrons will rush around in the middle of the ball, and then cause a chain reaction. ”

"Is that so?"

"Assuming that uranium atoms absorb one neutron at a time and excite two or three neutrons at the same time, then there is a so-called chain reaction, and each uranium atom splits into two smaller fragments and 200 megaelectron volts, so this new type of * is theoretically feasible."

"Yes, if the principle is feasible, what is not feasible?"

"Before I returned from Berlin, I had a long conversation with His Excellency Heisenberg, and he wanted me to reveal that Germany had invested millions of marks in theoretical estimates of this model, but the results were not encouraging. To put it simply, there must be enough chance of hitting the nucleus before the neutron escapes; So, all the problems are reduced to one, which is the magnitude of the critical mass. And the calculations of German scientists suggest that the weight of this sphere may be close to 10 tons. In other words, even if our industry can manufacture so many high-purity U235, such a huge device is difficult to use in actual combat. What's more, how can so much uranium be purified? This is a difficult problem that Japanese industry cannot achieve. ”

When Asaga introduced him to Kagesa, Yoshio Nishina kept nodding his head, hoping that the arrogant nerds of the military would at least maintain some reverence for the German academic authority, and that it would not work a day earlier.

"No, Heisenberg's calculations were wrong."

There was silence in the reception room, and Asaga and Nishina opened their mouths to watch Kagezo continue to look through his notes.

"If the intelligence provided by my informant is good, the critical mass of the U235 is 50 kg. And it can be less. ”