The killing incident was called the "Wild Frog Gou Incident" in the Intelligence Department of the Kwantung Army, and it was also called the "10 Mutiny" in the records of the secret search section established by the Japanese army in cooperation with the Security Bureau of the puppet Manchurians.

After listening to this, Hou Wan asked: "I have heard of both the Intelligence Department of the Kwantung Army and the Security Bureau of the Puppet Manchurians, but what department is the secret search department?" Unheard-of. ”

Xie Meng explained: "The secret search department was a direct department set up by the intelligence department of the Kwantung Army in the security bureau at that time, and it was ostensibly one of the nine major sections of the security bureau, but in fact, the security bureau at that time, including the secret search section, was a total of ten departments. ”

At that time, the Puppet Manchurian Security Bureau claimed to have nine sections, from one section to nine sections, which were respectively responsible for general affairs, investigation, general anti-espionage, foreign affairs anti-espionage, espionage, wireless anti-espionage, communication anti-espionage, secret warfare science, and the Green Garden Academy, which did not exist to the outside world.

The so-called Green Garden Academy, these people are ostensibly florists, but they are actually responsible for monitoring the puppet "emperor's eyeliner".

The secret search department is hidden from the outside, except for the inside, no one knows about the existence of this department, and the main responsibility of this department is to investigate all kinds of bizarre events in the northeast.

It stands to reason that this kind of case should have been handed over to the Secret Search Division, but because the Secret Search Division was going all out to find the Shaman Spirit Palace at that time, the matter was also handed over to the Manchurian Investigation Department.

Hearing the four words of Shaman Spirit Palace, Wei Chi Ran came to his senses and immediately asked, "Why are they looking for Shaman Spirit Palace?" ”

Xie Meng looked into Wei Chiran's eyes and said, "Among the records we found, we found a name, and you should not be unfamiliar with this name. ”

Wei Chiran asked, "Who?" ”

Xie Meng said word for word: "Tang Qianlin." ”

Wei Chiran and Hou Wan were stunned at the same time, it turned out that what happened during the Puppet Manchurian period was true, and the Shaman Spirit Palace was also true, and everything they knew was completely consistent with what Ai Qi said.

Xie Meng said again: "The Shaman Spirit Palace has nothing to do with our trip, so there is no need to delve into this matter, let's continue to talk about the Wild Frog Gully." ”

At the same time that the 193 people were used as experimental subjects, the Japanese follow-up units also began to interrogate the mastermind of the killing, or at least what they thought was the mastermind, Izoro Izome.

The 193 disarmed people had nowhere to be detained, and because they were afraid of escaping and revealing secrets, they had no choice but to throw them all into the cave and continue to dig the cave, trying to dig up the whole grid cave.

These 193 people were disarmed and used as coolies, and although they complained, most of them did not dare to speak up, because the Japanese among them thought that the military headquarters would not kill them, and the Korean soldiers themselves could only suffer dumb losses because the Japanese did not take the lead.

Most importantly, they also wanted to figure out why the 10 people, led by Shiro Inozome, suddenly became crazy and started killing people when they saw them.

This matter is also a matter that the scientists in the investigation department are puzzled by, and after reading the records left by the deceased Masao Shika, they still can't figure out their thoughts, so they decide to interrogate the surviving Shiro Izome.

After a simple interrogation, they found that Inozoshi was inarticulate, saying this and pulling that for a while, so they simply went directly to the punishment and beat Izome Shiro to death.

But in the process of torture, they found a strange thing, Izome Shiro seemed to be really crazy, begging for mercy for a while, peeing his pants, and then insisting that he didn't know anything, and after a while, he scolded everyone else for being stupid, and finally cried, crying and shouting that he was wronged.

The interrogation process of Izome Shiro was watched by the person in charge at the time, that is, Masao Ueji, who was also an official of both the Military Department and the Manchurian Railway Investigation Department.

Masao Ueji's identity is extremely complicated, but in fact, these complicated identities are all to disguise that he was a dispatch officer of the Japanese Cabinet Intelligence Department at the time. At that time, although Japan was controlled by the military department, there were still a large number of people who were dissatisfied with the military department and secretly consolidated their strength, and Masao Uechi was one of them.

Masao Ueji, who was originally a full-time interrogator, found out during the interrogation of Izome Shiro that the other party's personality was changeable, and through other people's understanding of him, coupled with the information transferred from Mantetsu, it was found that Izome Shiro was actually a taciturn person, usually not talkative, very meticulous in his work, and almost never angry.

But today's Izome Shiro is talking endlessly for a while, crying bitterly for a while, and angry for a while, and he doesn't look like a person at all before.

Masao Uechi had studied in the West and studied psychology at the University of Leipzig in Germany, so he concluded that Inozoshi had schizophrenia, and the cause of his schizophrenia was the cave, so he had to find out what happened during the period when Izome Shiro disappeared in the cave.

However, because of the uncontrollable emotions of Shiro Izome now, he can't start with this person, so he can only send the 193 people who survived into the dark cave one by one to see what will happen to them.

What happened after that, according to Masao Ueji's notes, was two words - chaos.

The first 5 people to be sent in were very similar to the previous commander and others, and after they came back, they all claimed that either this place had changed, or that there had changed, and after sending in 5 more people, these 5 people disappeared again, and after they disappeared, they returned three days later, and they were the same as Izome Shiro, they only remembered to go in and then came out, and in their memory, time seemed to stand still.

Seeing this, Masao Uechi remembered Masao Kao's notes, and he feared that these five people would go crazy like the 10 people of Shiro Inozome, so he immediately ordered them to be kept in solitary confinement and observed their changes twenty-four hours a day.

At first, the 5 people were like normal people, but after 12 hours, the 5 people began to lose control of their emotions, constantly telling the guards that they had headaches, as if their heads were about to explode, and then began to babble and mumble many things that others did not understand.

Masao Uechi chose one of them and brought him out for interrogation, a North Korean soldier named Yasuda Yuzo in Japanese.

The reason why Masao Ueji wanted to interrogate Yasuda Yuzo was that when he transferred the information of these people, it was Yasuda Yuzo whose information was the most detailed in the military department.

After holding Yasuda in solitary confinement, Masao Uechi gave him sedatives to make him less manic and relieve headaches, and refused other people's suggestions to give the soldier an awakening agent.

Masao Ueji knew very well what the awakening agent was, and if it was a chemical that was really beneficial to the human body, why didn't those high-ranking officers take it?

Masao Uechi set the interrogation into two stages at the beginning, but the questions he interrogated were very simple, and they were all set up corresponding to the family relationship of Yuzo Yasuda.

Yasuda Yuzo's original Korean name was Song Jung-ho, and his father was an official of the Japanese Governor-General's Office in Korea, which was later known as the Korean traitor. There are two older sisters in the family, the mother died early, and the father continued to have a young and beautiful wife, and Yasuda Yuzo was sent to the Japanese army for the purpose of gilding and demonstrating his father's so-called loyalty to Japan.

The original arrangement was that Yasuda Yuzo would not go to the battlefield, and he could serve in the so-called puppet Manchurian department for a while, and then return to North Korea to arrange the future by his father.

However, Yasuda Yuzo didn't expect that the troops, which were originally just gilded, were suddenly transferred to Wild Frog Gully.

During the first interrogation, Yasuda Yuzo answered exactly the same questions as in the information, Masao Uechi didn't say anything, and after the interrogation, he continued to observe Yasuda Yuzo and found that he continued to have headaches, and the medication did not work.

So, Yasuda Yuzo decided to interrogate again, but this time during the interrogation, Yasuda Yuzo's answer was completely different from the last time. He claimed that his father was an ordinary businessman, his mother was still there, that he was the only child in the family, and that he was forced to enlist in the army.

Masao Uechi believes that Yasuda Yuzo did not lie because he had no motive to lie, and in this case, it is impossible for Yasuda Yuzo not to report his father in exchange for better treatment.

But just as Masao Kamichi was about to stop the interrogation again, Yasuda Yuzo suddenly began to curse, claiming that he didn't say anything, and shouting things like "Long live Korean independence", as if he were a Korean independence activist.

Masao Kamichi was surprised and asked Yasuda Yuzo again, but Yasuda Yuzo directly hit the wall next to him and tried to commit suicide, but was stopped by the soldiers present.

After that, Yasuda Yuzo shouted for a headache again, this time Masao Ueji accepted the advice of others and gave Yasuda Yuzo an awakening agent, he couldn't care so much anymore, he had to find out what was going on as soon as possible.

Yasuda Yuzo, who had taken the awakening potion, sat back in his place again and began to answer the repeated questions asked by Masao Kamiji, and in the next five interrogations, each of his answers, except for his own North Korean name unchanged and his parents' names unchanged, everything else is changing, either there is one sister instead of two, or he has died of a sister, in short, every time he is interrogated, his past life experience is completely different.

Moreover, it definitely doesn't look like he's lying, and besides, this Yasuda Yuzo doesn't look like a smart person, and even if it is, he doesn't have any motive to do so.

It didn't take long for Yasuda to die, by suicide, and by knocking himself to death.

In the following days, it took the Japanese army half a year to finally dig out the entire grid cave, and also found the wooden planks with dark lines in them, and the Japanese army found that those wooden planks could not be damaged no matter what, and they were shocked, they felt that this should be the most shocking discovery in the world at that time, and even imagined that if this material was used in the military, used in tanks and airplanes, then the idea of Japan winning the war was no longer a dream.

It's a pity that until Japan surrendered, Masao Uechi and others did not reveal the secret in the wild frog ditch, let alone any way to take those dark planks out.

Finally, the Soviet army declared war on Japan and began Operation August Storm, and Masao Uechi and others also received orders from above to join the nearby troops on the spot to resist the Soviet attack.

At that time, less than 50 of the 193 people were still alive, and the rest all died in the dark cave experiments.