Everyone can see that this is a very special case, Ran Ruzhai's body has been cremated, the body has been destroyed, and the traces have been destroyed. Now I can only find clues and evidence from the three Ran brothers and sisters.

At half past eight, two police cars stopped in front of the silversmith shop, and Ouyang Ping and his group of six people got out of the car.

Chen Jie, Yan Jianhua and Wei Zimin stood on the steps in front of the silversmith shop early in the morning, waiting for the arrival of their comrades.

The arrival of two police cars caused quite a commotion on Mafu Street, and many heads stuck out from the shops along the street. Some simply ran to the car to find out.

People who knew Wei Zimin asked Wei Zimin about the situation.

Wei Zimin and another policeman stayed at the entrance of the alley and stopped the growing crowd outside the alley.

Chen Jie and Yan Jianhua led Ouyang Ping and his party into the front yard of Ran's house, carrying a criminal investigation box in their hands to the east.

When Ouyang Ping and his entourage walked into the west wing, Ran Shikai had already removed the wooden bed and opened the secret door of the secret room.

Chen Jie took out the gray button from his bag and handed it to Ouyang Ping's hand: "Ouyang, this is what we found in the secret room." ”

Ouyang Ping put the button on the palm of his hand, looked at the front and back three times, and then put it on Liu Dayu's hand.

"Ouyang, could this be a button on your uniform?" Yan Jianhua said. Ran Shijie worked in Dalian Mountain Prison, and he first thought of Ran Shijie.

Liu Dayu called Li Wenhua to him and handed the button to him: "Wenhua, you and Liu Wenbin go to investigate, go to Dalian Mountain Prison first, and then go to other units to investigate." Be patient and find out where the buttons come from. ”

Li Wenhua took a small plastic bag from his hand from left to east, put the buttons into the plastic bag, and put it into the leather bag. Then he walked out of the wing room with Liu Wenbin.

Chen Jie, Ouyang Ping, and Zuo Xiangdong descended into the secret room in turn.

Zuo Xiangdong was responsible for taking pictures, Ouyang Ping was responsible for measuring the size of the three sets of shoe prints, and Chen Jie was responsible for recording.

The sizes of the three groups of shoe prints are consistent with the visual inspection results of Chen and Yan, and the three groups of shoe prints are 42 yards, 41 yards, and 38 yards respectively. The floor of the chamber is paved with floor tiles, and gravity cannot be seen through the traces, so it is impossible to judge the height and weight of the owner of the shoes based on the traces.

Because the shoe is on the floor tiles, there is not much dust on the floor tiles, coupled with the paw prints and excrement of rats, so it is only possible to determine the size of the shoe prints, and it is impossible to know the model of the shoe and the pattern of the sole.

After that, the three men carefully inspected the inside of the chamber, including the two wooden boxes, the wooden boxes inside the wooden boxes, and the broken silk.

Finally, Ouyang Ping and Chen Jie also checked the handle of the wooden door, the frame of the wooden door - wherever the hand could touch, and the wooden ladder.

The three people made the following discoveries:

First, in addition to the three sets of regular shoe prints, there are also some messy shoe prints that belong to the same person in terms of size (the shoe prints of Ran Shikai, Chen Jie, and Yan Jianhua have been excluded). Judging by the size, it is the shoe print left by a size 40 shoe.

Second, five fingerprints were extracted from door handles, door frames, and wooden ladders.

Thirdly, a piece of black rubber skin was extracted from a crossbar of the wooden ladder.

Fourth, the brick walls in the secret room and the brick walls in the east and west wings of the front yard of the Ran family are all blue bricks; The floor tiles in the secret room are also floor tiles with a side length of 60 cm, and the size and color are the same as those of the floor tiles in the west wing.