After confirming that Tanimura Natsukawa was completely dead, Lin Jiangbei asked Liu Xuan to reconnect the line that had cut off the interference suppression antenna, so that the jammer could resume normal work. He himself conducted a careful search of Tanimura Natsukawa's body, and found that Tanimura Natsukawa had nothing else on him except for a bunch of keys.

Lin Jiangbei rummaged through the keys with a flashlight, and quickly determined that one of the keys was the door key of room 507. Because this key is not only similar in appearance to the key of Araki Oi's room, but also engraved with the four yokan characters of the East Asian Lock Factory on the handle of the key.

Although for Lin Jiangbei, even if he does not have a key, he can use tools to open this hitch type pin lock lock produced by the East Asian lock factory in Japan, but it is obviously more convenient and time-saving to have a ready-made key.

So Lin Jiangbei explained a few words to Liu Xuan, and then took the set of keys along the passage on the roof to the fifth floor, after making sure that there was no one in the corridor on the fifth floor, Lin Jiangbei quickly came to the door of room 507, first put his ear on the door to listen to the movement inside, and after making sure that there was no one inside, he quickly inserted the key engraved with the Yangwen of the East Asia Lock Factory into the keyhole on the door lock, twisted it slightly, and then the door opened.

Lin Jiangbei pushed open the door, flashed into the house, locked the door with his backhand, and looked at the room carefully.

Compared to Room 413, where Araki Oi is located, Room 507 is at least half the size. Judging from the layout of the room, in addition to the bedroom and living room, there is a small room.

At this time, the sliding door of this small room was wide open, and from Lin Jiangbei's angle, the layout in the small room could be seen clearly at a glance.

Obviously, this small room was used as a workshop by Tanimura Natsukawa, and on the workbench, an instrument slightly smaller than the safe in Araki Oi's dark grid just now was buzzing, and it was obvious that this instrument was the radio jammer that Lin Jiangbei was looking for.

Next to this radio jammer, there is also a radio-sized instrument, although the appearance is different from the two transmitters that Lin Jiangbei found in the residence of Wang Longfei's mistress in Hangzhou and the tailor shop in Chiwei and Mo in Los Angeles, but there is no doubt that this instrument that has not worked for the time being should also be a wireless telegraph.

Lin Jiangbei checked Tanimura Xia Chuan's bedroom again and made sure that there was no other person hidden inside, so Lin Jiangbei turned off the light in the room, then opened the curtains, opened the window, lit a cigarette, and shook it outside a few times.

Liu Xuan, who was waiting on the roof of the building, saw the signal coming out of the 507 window, so he hurriedly learned a few turtledoves and responded to Lin Jiangbei. Then he used the cotton rope twisted from the sheet to tie Tanimura Natsukawa's body and slowly sent it to the window of 507.

After Lin Jiangbei took the body of Tanimura Xia Chuan through the window, Liu Xuan picked at the crack in the wall with both hands, swam down a few times, and then turned over and easily rushed through the window into room 507.

Lin Jiangbei put Tanimura Xiachuan's body aside, and after Liu Xuan came in, he hurriedly reached out to close the window, closed the curtains, and then followed Liu Xuan to first start searching Tanimura Natsukawa's workshop.

But to Lin Jiangbei's disappointment, he and Liu Xuan turned almost the entire workshop upside down, and only found a few secret scripts, but the codebook that Lin Jiangbei was expecting did not find.

It's a little strange now, Araki Oi doesn't have a codebook, and it's impossible that Tanimura Natsukawa doesn't have a codebook! Liu Xuan made it very clear through the investigation of the patrol room that Tanimura Natsukawa lived alone in room 507, and according to the scene of room 507, it was indeed only Tanimura Natsukawa who lived alone!

In addition, there is another mystery that remains unsolved, that is, which Japanese secret service did Tanimura Natsukawa belong to, and what was his main mission in this apartment on Zhapu Road before he was responsible for operating the radio jammer?

This problem has not been solved, and even if Lin Jiangbei destroys the radio jammers in this stronghold, it can only be regarded as half of the task.

Originally, to solve this problem, the best way was to leave Tanimura Natsukawa alive first, and when this question was interrogated clearly, it would not be too late to ask Tanimura Natsukawa's life.

But the problem is that all the people living in this building are Japanese, and this is the core area of the Japanese jurisdiction, as long as Tanimura Xiachuan makes a slight movement, Lin Jiangbei and Liu Xuan will be exposed and fall into the encirclement of the Japanese, so Lin Jiangbei has to choose to kill Tanimura Natsukawa as soon as he starts, and reduce the uncontrollable factors to a minimum.

Lin Jiangbei raised his wrist and looked at his watch, it was already half past eleven in the middle of the night. Considering that they still had to withdraw from the Japanese jurisdiction to the Zhabei area, the time left for them in Room 507 was only half an hour at most. Because once it is past one o'clock in the morning, there are hardly any pedestrians on the streets of the public concession day management area. Even if most of the Japanese marines in charge of patrols were transferred to the banks of Suzhou Creek, the two of them were still too conspicuous to walk on the deserted streets of the Japanese management area after one o'clock in the morning, and they would definitely be questioned by a small number of Japanese marines who stayed in the core area of the Japanese management to patrol.

"Lao Liu, you hurry up and be responsible for searching the bedroom, and I'll search the living room. Regardless of whether there is a harvest or not, we must evacuate by twelve o'clock in the morning! Lin Jiangbei explained to Liu Xuan.

"Yes!" Liu Xuan responded, and separated from Lin Jiangbei and began to search.

In fact, at this time, Lin Jiangbei had no expectations in his heart. Because if the codebook is not found in Tanimura Natsukawa's work area, then the probability of living room and bedroom is even less likely.

But he didn't expect that as soon as Liu Xuan entered the bedroom, he poked his head out of it in surprise and beckoned him in, "Stationmaster Lin, what is this?" ”

Lin Jiangbei followed Liu Xuan to take a look, and saw a boxy machine in the bedroom closet, which looked like a typewriter, but had some more complex parts than a typewriter.

As soon as his heart moved, a thought suddenly flashed in his mind, so he couldn't help but whisper in surprise: "Ninety-one type cipher machine? ”

"What? This turned out to be a 91-style cipher machine? Liu Xuan was also stunned.

"Probably right!" Lin Jiangbei stepped forward and inspected this intricately constructed mechanical device as if he had obtained a treasure, "Except for the 91-style cipher machine, I can't imagine any other instrument that the Japanese can have such a complex and exquisite structure!" ”