Ning Zhiheng didn't say a word, walked through several rooms, and at the same time looked at all the members of the deciphering team, and then left the studio.

Yu Cheng didn't know Ning Zhiheng's intentions in the back, and followed out in a daze.

Ning Zhiheng turned his head to Bian Deshou and asked, "Old Bian, there are a lot of these experts, are they usually working like this, they seem to be very busy." ”

Bian Deshou nodded and said: "It's usually the same, but don't look at their tempers, and they don't like to deal with people, but their work attitude is nothing to say, sometimes they work day and night." ”

Yu Cheng said disappreciatively: "What's the use of this, our Military Command Bureau has invested so much in the past few years, and we haven't made any achievements." ”

Bian Deshou didn't like to hear this sentence, and defended: "It's hard to say this kind of thing like code breaking, sometimes a flash of inspiration is comparable to a few years of accumulation, and you don't understand this!" ”

Ning Zhiheng interrupted them with a wave of his hand, and then asked, "How was Yi Dong's work performance when he was here?" ”

"I don't have to say, Yi Dong is a workaholic, not only an excellent mathematician, he has a natural sensitivity to numbers, but also a Japanese student, proficient in Japanese, it can be said that most of the work results are made by him, the work is very positive, usually he is always the first to come, the last to go, hey! It's a pity..."

Bian Deshou shook his head and sighed, for the entire decipherment team, Yi Dong's death was an irreparable loss, and for more than a month, the work of the decipherment team had almost stagnated.

Ning Zhiheng then asked, "I want to ask, does Yi Dong usually have any hobbies?" ”

Bian Deshou said: "He doesn't have any hobbies, he is very boring, he only likes to work, but he is very kind, his temperament is a little weak, and he is a very introverted person!" ”

Ning Zhiheng nodded, these are roughly the same as the materials given to him by Yu Cheng, he also focused on Yi Dong's materials last night, sorted out his thoughts, and then asked, "Then does he usually bring work home?" ”

Bian Deshou was stunned for a moment, shook his head and said: "No, every page here can't be brought back, their decipherment work can only be carried out in the decipherment room, even if it is deciphered at home, even if it is a check paper, or a form, it must be destroyed, and it must not be circulated, this kind of thing has happened before, and then they were severely punished, they will never work at home again, even if they work overtime here, they will not bring their work home." ”

Ning Zhiheng pondered for a moment, and then said: "I read the case information at that time, on the day of the air raid, eight of these experts were still working in the decipherment room, and the remaining eleven experts, including Yi Dong, were resting at home, why is this?" ”

Bian Deshou explained: "The day is the 16th, and the rules of the decipherment room are to rest every Saturday, and the 6th, 16th, and 26th of each month are rest days, so most of the experts are at home, and there are eight experts who work overtime in the decipherment room."

Because the work in their hands is in charge of their own work, there is a division of labor, some are responsible for calculation, some are responsible for sorting, some are responsible for analysis, and the work progress is different, so the work is relatively free, and there is no need to tie it all together, and some people are willing to work overtime, and we will not stop them. ”

"So does Yi Dong usually like to work overtime?"

Bian Deshou was stunned for a moment, thought for a while and replied: "Yi Dong usually has no business hobbies, and he often works in the decipherment room on his days off, especially before he was killed, he hardly rested, and then finally succeeded in deciphering several codes of the Japanese, and the bureau rewarded him greatly, and ordered him to strike while the iron was hot and step up his efforts to decipher the military codes of the Japanese, so he was very motivated, and he rarely rested on his days off." ”

"Then why didn't you come to work overtime that day?"

Bian Deshou and Yu Cheng glanced at each other, Yu Cheng said with some hesitation: "After all, the sixteenth is a rest day, Yi Dong said it in the past even if he doesn't come, it's not too much to work for a long time and take a day off occasionally, aren't most experts also resting at home?" ”

Ning Zhiheng shook his head, noncommittal, turned his head and ordered, "Let's go to the place where Yi Dong was killed and take a look." ”

Yu Cheng agreed, and the two of them went out together, Bian Deshou thought about it and chased it out, and asked with a smile: "Director Ning, I don't know if it's inconvenient for us to take a look together." ”

Yu Cheng seized the opportunity at this time, and said with a straight face: "Old Bian, you have the final say in this decipherment room, out of here, but it's our business, our investigation of this case is confidential, so don't get involved." ”

These days, Bian Deshou is a little impatient with Cheng's many door-to-door investigations, so he always uses confidentiality as an excuse, and Yu Cheng is not happy, and now Yu Cheng seizes the opportunity and makes Bian Deshou a heel in one sentence.

Bian Deshou rolled his eyes angrily, turned around and was about to leave, Ning Zhiheng hurriedly stretched out his hand to stop him, and said jokingly: "Old Bian, old Bian, Lao Yu is joking with you, are you still careful?" Let's take a look, there are many things I want you to staff on. ”

Ning Zhiheng's words made Bian Deshou very face-saving, he looked at Yu Cheng with disdain, and then he and Ning Zhiheng got into the car, and the group quickly drove a block, and came to a stop in front of a ruin.

Ning Zhiheng and the others got out of the car, looked around, and saw that the nearby buildings were also collapsed, bricks and tiles were everywhere, and the bombing was very thorough, obviously the density of the bombing was very high at that time, he opened his mouth and asked: "This is Yi Dong's original residence?" ”

"Yes, this is it!" Yu Cheng nodded and said, he took a few steps forward and drew a semicircle with his hand, "I haven't let anyone move everything here, it remains the same as after the explosion, the people in the city hall have always urged us in the past two days, and this residence must be restored as soon as possible." ”

Yu Cheng did things carefully and carefully, and the scene was well protected, Ning Zhiheng looked around, Yu Cheng followed behind, pointed to an open space and said: "This is an open space in front of Yi Dong's residence, and the bombing marking tape was found here." ”

Ning Zhiheng nodded, began to walk around the neighborhood again, turned to Cheng and asked, "Where is Yi Dong's family now?" ”

Yu Cheng looked back at Bian Deshou, Yi Dong belonged to the Telecommunications Department, and the arrangements of Yi Dong's family should be in his charge.

Bian Deshou hurriedly replied: "Not far ahead, the bureau specially explained that Yi Dong's family was treated favorably, so a high pension was issued, and an independent courtyard was also allocated. ”

Ning Zhiheng nodded, the bureau is still particular about doing things, and he is finally worthy of Yi Dong, a meritorious man.

After staying at the scene for a long time, Ning Zhiheng came and walked around the open space, bowing his head and thinking about something, Bian Deshou and Yu Cheng stayed aside, waiting quietly.

After a long time, Ning Zhiheng looked up at them and began to analyze: "Last night, I looked at the materials you investigated before, and I was a little suspicious, in order to attack and kill Yi Dong, the Japanese took great pains to mobilize bombers to carry out a surprise attack, and it was not easy to prepare for such a big move.

After so much preparation and so much energy, they will never allow this mission to fail easily, so they must ensure the success rate to the greatest extent, and the first and most difficult point is to confirm Yi Dong's position.

Let's analyze it from the beginning, Yi Dong's whereabouts are easy to grasp, he has no preferences, he usually only operates at home, or in the two locations of the decipherment room, and if the Japanese want to accurately attack Yi Dong, they can only start from these two locations.

First of all, it is more difficult to bomb in the decipherment room, bombers drop bombs at high altitudes, the accuracy is very low, even if it is low-altitude bombing, it is necessary to have ground guidance, that is, to have bombing marks, otherwise they will not be able to accurately bomb the target.

Even before the bombing, it was difficult for Japanese spies to arrange signs nearby, and it was difficult to get out afterwards, and without ground markers, the success rate of bombing in the decipherment room was extremely low.

Then you can only bomb in Yidong's residence, I have seen the surrounding situation, the management here is very lax, and there are no guards, and there is no difference from ordinary family areas, and it is very coincidental that there is this open space in front of Yidong's residence, before the bombing, while everyone is hiding in the air-raid shelter, as long as the hands and feet are sharp, there is no difficulty in arranging bombing signs here, and there is no need to worry about evacuation, so the Japanese chose to do it at his residence.

The bombing site has been determined, and now it is necessary to determine the location of Yi Dong, although it was a rest day, but how did the Japanese decide that Yi Dong would definitely rest at home, and not work in the decipherment room?

You must know that Yi Dong often works overtime on rest days, and even if he doesn't work overtime, he may go out shopping and relax with his family, how do they know that Yi Dong must be at home?

The Japanese bombers all took off from Hankou and came to the sky over Chongqing, the whole journey was more than 700 kilometers, and it took an hour and a half to fly, even if there was a traitor who was sure that on that day, Yi Dong did not go to work overtime at home, nor did he go out to play, and then sent a report to Wuhan Hankou that the Japanese bombers received the order to set off and began to set off, how could they ensure that within an hour and a half, Yi Dong would stay at home and wait for them to bomb?

There are too many variables, but in the end they still succeeded, what is the reason for this? ”

Ning Zhiheng's series of questions made Bian Deshou and Yu Cheng speechless, and they also reacted at this time, Yu Cheng was also an experienced agent after all, and quickly replied: "When we were investigating, I asked Yi Dong's wife, and he said that Yi Dong usually doesn't like to go out to play, this is the norm, and I ignored this, and now it seems that the Japanese must have done a job to force Yi Dong to stay at home all the time." ”

Ning Zhiheng said in a deep voice: "They must have done something to Yi Dong before, this point can be found out by asking Yi Dong's family in a while, I think we are not far from the truth!" ”

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