Six hours later.

The secret service is brightly lit.

Zuo Chong walked out of the interrogation room with a serious expression and rolled off his blood-stained cuffs. After interrogating for so long, Ren Guanglin had been biting to death and refused to admit the accusation of spies.

Regarding his relationship with Pang Chong, the boss named Su Zifu and the deaths of the 15 officials were even more unaware of the truth about his relationship with him. He was determined to be a loyal minister of the Locust.

Guqi, who came out with him, held his confession and was amazed: "Deputy Director, we have been in contact with many Japanese spies, but this is the first time we have seen such a tough guy."

"The Japanese are not vegetarians. We have warriors who are not afraid of life and death. They must be short of them. OK, I won't say much nonsense. I'll go back to Ren Guanglin's house to take a look." Zuo Chong stretched.

"Deputy Director, then should I review it here?"

"Continue, don't give the other party a chance to rest."

"Yes, I understand."

The two agreed to the matter. Guqi ordered a team of guards and turned back to start work. Zuo Zhongze Qingche Jian went to the vicinity of Baixia Road, hoping to find clues related to the case from the target's residence.

When he arrived at the destination, he asked the driver to wait in the car. He walked to the second floor alone and greeted the policeman guarding the scene. He put on his shoe covers and gloves, put on his toes, pushed the door and walked in.

The place keeps the way they were when they left. The police did not have the orders of the secret service and would never dare to enter the scene of the spy case privately. These old fryers know the seriousness of this matter more than anyone else.

"Dang thump..."

Zuo Chong turned on the light and took out a pen from his pocket, and carefully knocked all the walls. The previous inspection of the Spy Service was relatively short, so there might be omissions.

He looked at every corner of the wall, behind every furniture, all corners that were difficult to touch under normal circumstances, but the result was no different, and he still didn't find any secrets.

This is a bit strange. Japanese spies are different from intelligence personnel in European and American countries. Most of them serve military purposes and basically carry guns for murder or suicide.

So where did Ren Guanglin's weapons, including fake documents and disguised supplies to be used during operations and retreats, it seems that he is either an exception or another safe house.

Some speculation flashed through Zuo Chong's mind. He stepped on the floor according to the search procedure, but eventually found nothing. He stood in the center of the living room and frowned, and after a long time he turned his eyes to the shoe cabinet.

He walked slowly over and squatted down and opened the cabinet door. Eight or nine pairs of shoes appeared in front of him. It was a little too many for a man, especially in this era.

It has different fashion attributes from later shoes. At this time, the function of shoes is a tool. It is considered too much for ordinary men to have four or five pairs. Why does Ren Guanglin buy so many shoes at home?

Appreciate it?

Or a hobby?

Considering that Ren Guanglin is a Japanese spy, a more reasonable explanation is that the other party’s disguise needs to be dressed in different identities, and these shoes are part of the disguise tools.

Zuo Chong picked up a pair of thousand-layer cloth shoes and weighed them. This kind of shoes is very comfortable, light and non-slip, keep warm in winter, and breathable and sweat-absorbing in summer. It is a common shoe for many people in Jinling. He also has two pairs.

Moreover, because it walks softly and has no sole patterns, it is very popular among grassroots intelligence personnel. Of course, it may also be because cloth shoes are cheap and the little spies don’t have the money to buy leather shoes.

He turned the cloth shoes in his hand and focused on observing the soles. Sometimes the soil or other residues carried by the soles can explain many things, but unfortunately the soles of the shoes are very clean.

Yes, Japanese spies would not be so careless.

Zuo Chong put the cloth shoes aside, took out the remaining shoes one by one for inspection, and there was no discovery. The soles of the shoes were carefully cleaned up. Ren Guanglin was very cautious.

He touched his chin, glanced at the direction of the door, got up and locked the door, took out his phone and turned on the flashlight to shine it deep in the shoe cabinet. The focus of his observation was the dark places where dirt was hidden.

This will have the best flashlight with a brightness of about 5 to 10 lumens, and the flashlight of the mobile phone has at least 30 lumens. The difference in lighting brightness will make it easier for him to find details that have been ignored by Ren Guanglin.

The light illuminated the shoe cabinet, and the horizontal board was spotless. It was obviously wiped. However, the left heavier was lying on the ground and saw a half-deer leaf inserted in the gap between the lower horizontal board and the rear board.

This location is very hidden, and it is difficult to find unless it is observed like him. Will this be an effective clue? He calmly pulled it out slowly to avoid destroying the evidence.

Hold the leaves in the palm of your hand and look carefully for a while. I found that the leaves are wide and oval in overall shape, with sharp serrations on the edges, nearly hairless on both sides, and darker in front, which seems to be rose leaves.

Rose, this plant is not only loved by Chinese people, but also by Japanese people. It was introduced to Japan during the Song Dynasty. The Japanese named it Gengshen Rose, which means rose that blooms the next month.

So has Ren Guanglin recently been to a place where roses are planted? This clue is too broad and has no practical significance. There is not a thousand roses in Jinling City, and there are eight hundred.

For example, Xuanwu Lake and Tangshan.

There are a large number of roses in these two places. Every year during the flowering period, many citizens will come to enjoy the flowers. The secret service cannot check all these places, so it must be found that they went to the 38th year of the Republic of China.

The only valuable thing is judging from the freshness of the leaves. This leaf probably only fell for two to three days. If we can trace back to Ren Guanglin’s recent whereabouts, we may gain something.

Zuo Chong thought while placing the leaves under the light and looking them over and over again. Several black soil at the bottom of the leaves caught his attention. When did Jinling have soil of this color?

The Secret Service collected a soil investigation report from the Central University of Jinling, which clearly stated that most of Jinling is yellow-brown soil, and there are small patches of red soil on the border with Huizhou Province in the south.

The reason is back millions of years ago. At that time, Jinling was an ancient tropical region. After long-term rainwater erosion, many compounds in the soil were washed away, but some were not easy to dissolve.

These insoluble compounds will naturally crystallize into groups of particles, which is the original shape of yellow-brown soil and red soil. There has never been black soil in and around Jinling.

So, where does black soil come from?

Where did Ren Guanglin get it from?

Zuo Chong took out the record book and sandwiched the leaves and soil in the middle and put them back in his pocket. Then he stood up and looked puzzled. The black soil of the Republic of China was in the northeast, where it was now occupied by the Japanese.

Could it be that Ren Guanglin has met his accomplices from Northeast China these days and accidentally stepped on the black soil brought by this person's feet. After thinking about it, he quickly ruled out this possibility, which is unrealistic.

Not to mention how difficult it is to bring soil thousands of miles away to Jinling, just because of the secret service's close surveillance of Northeast personnel, Ren Guanglin, who is cautious, would not risk running to the joints.

Natural causes are impossible,

Could that be an unnatural factor?

Zuo Chong thought of humus soil. This artificial soil was not imported from Europe and the United States, but a derivative of flowers and plants planted by ancient Chinese literati and scholars. It is used in many places today.

For example, flower beds for cultivating seedlings, gardens for wealthy families, flower beds in public places, and even small potted plants will lay a layer of nutrient-rich soil to allow the plants to grow smoothly.

This can summarize two survey criteria: one is that humus soil is used in a certain place, and the other is that roses are planted there. Although the range is still a bit large, it is better than finding a needle in a haystack.

After he recovered, he turned off the lights and left Ren Guanglin's residence. He got in the car and returned to the secret service office. After consideration, he decided to ask Song Minghao and Wu Jingzhong, who were surveillance of Yang Changqing, to separate some people to search.

Compared with Wu Chunyang, who monitored many suspicious officials, their work intensity was a little lower, and they didn't need to put everyone's hands together. They could check the clues of humus at the same time.

But what he didn't expect was that shortly after the order was conveyed, Song Minghao rushed back to Honggong Temple alone and reported something. After hearing it, Zuo Chong was furious.

"What, outside the wall of Yang Changqing's house is a flowerbed, with a large area of ​​roses and humus inside. Song Minghao, Song Minghao, what are you doing for? Can't even look down on one person?"

Based on the current situation, Ren Guanglin may have met Yang Changqing in the flower garden, and was surrounded by the secret service. This is the biggest shame since the establishment of the secret service.

When will their secret service be the same as the secret service headquarters? The enemy will come whenever they want and leave whenever they want. If Xu Enzeng, Wang Badan, knew about this, he would probably even laugh.

Faced with Zuo Chong's thunderous anger, Song Minghao explained sadly: "Deputy Director, Lao Wu and I were really not careless this time. The neighbors around the target have all conducted the strictest background checks.

The flowerbed is under the name of a local Jinling native. The situation of his own and his family is normal, and he has not interrupted contact with relatives and friends like the Pang family you reported, so we didn’t care.”

He felt that he and Wu Jingzhong were really wronged to open the door unjustly - they got home unjustly. Since receiving this Japanese spy case, they have not been home for many days and are devoted to their work.

Who would have thought that the target was so cunning and unexpectedly set up a secret joint ground next door. This was completely inconsistent with the behavioral logic of intelligence work, and it caught the two people off guard.

"Strictly, that's a big deal!"

Listening to his words, Zuo Chongyu was so angry that he patted his desk hard: "Do you wait until Yang Changqing runs away before you discover the problem inside, and quickly call people to prepare for action.

Arrest Yang Changqing's family immediately, and this matter cannot be delayed. If the other party knew that Ren Guanglin was arrested last night, he would probably evacuate. If the person ran away, Lao Song, you will be in great trouble."

"Yes, I'll go now."
Chapter completed!