When I was just reborn, I was sold for 300 yuan.

Aunt Cuihua had rarely seen an official in her life, and had almost never encountered a murder case like this. In addition, information was blocked in that era, so naturally she knew nothing about criminal investigation methods such as fingerprints.

After hearing what Cheng Beilin said about fingerprints, he asked curiously.

Therefore, Cheng Beilin patiently explained to Aunt Cuihua some criminal investigation knowledge such as what fingerprints are and how the police use fingerprints to identify criminals.

Aunt Cuihua was completely confused, her eyes almost spinning around: "Oh my god, this is too complicated, it sounds amazing."

As she spoke, Aunt Cuihua looked at Cheng Beilin with admiration and gave her a thumbs up: "Xiao Lin, you are a good girl. You know so much. You are amazing."

Cheng Beilin smiled and said, "Nothing much, I just read some books and remembered some things."

"Studying is indeed useful." Aunt Cuihua nodded and said, "When my grandson grows up, I will also let him go to school. Studying is useful."

Su Qing smiled and said, "Aunt Cuihua, your little granddaughter should also be sent to school. Girls are no worse than boys in studying."

"Yes, yes, I will talk to my husband and my son later and send the child to school when he grows up. He will definitely have a better future than us old farmers who have to work in the fields for a living." Aunt Cuihua nodded quickly.

After talking for a while, seeing that it was getting late, Aunt Cuihua was about to say goodbye and leave. Su Qing hurriedly took out some snacks and candies and stuffed them into Aunt Cuihua's mouth. Aunt Cuihua couldn't refuse, so she accepted them with a smile. When she got home, she asked her daughter-in-law to send some homemade sauerkraut and dried beans, which Su Qing also accepted with a smile.

When Su Qing and Cheng Beilin were the only ones left in the room, Cheng Beilin said with some concern: "Su Qing, do you think that guy who hurt people could be a serial killer? He killed a girl, so would he look for the next target? If so, it would be too scary."

"It's okay, don't worry. I believe Gongan will catch the criminal soon." Su Qing comforted.

"Well, I hope so." Cheng Beilin lay on the bed and leaned closer to Su Qing: "No, I have to sleep next to you tonight, otherwise I'm scared."

Su Qing couldn't help but laugh and said, "You were very brave when you asked Aunt Cuihua to tell you about the things in the puddle during the day."

"Gossip is gossip, fear is fear, there is no conflict." Cheng Beilin pouted stubbornly.

"Okay, let's go to bed quickly." Su Qing blew out the kerosene lamp and whispered to Cheng Beilin.

"Yeah." Cheng Beilin nodded and closed his eyes. Su Qing quietly injected a wisp of green mist into Cheng Beilin. Cheng Beilin felt that his heart, which was still a little panicked, gradually calmed down, and he soon fell asleep.

Seeing that Cheng Beilin had fallen asleep, Su Qing quietly got up, gave an instruction to the landmine flower kept in the house, then quietly left the yard and went to the puddle under the cover of night.

A murder occurred near Lihua Village. If the case is not solved quickly, the villagers will not feel at ease. Su Qing plans to see if she can find any clues and secretly provide some assistance to the officials handling the case.

Now Su Qing's wood-related ability has been upgraded to level four, all thanks to the uninhabited primeval forest deep in the Dahu Mountain. The rich spiritual energy in that forest allowed Su Qing to reach the same level of ability as in her previous life in a short period of time. You know, even in the end of the world in her previous life, it took her several years to upgrade her wood-related ability to level four.

Moreover, Su Qing also discovered that, maybe it was because she had changed to a new world, or because she had merged with the Lingkong Grass, in short, her current fourth-level wood-type ability was somewhat different from that in her previous life.

She actually discovered that she could use plants to go back in time, that is, she could see what the plants had seen before through their perspective.

Of course, the scope of this time travel is limited. Her current level 4 wood-based ability can only travel back three days at most.

Su Qing didn't know if three days was enough time. Maybe she would have worked in vain tonight. After all, Aunt Cuihua said that the female corpse had been soaked so much that its original appearance could not be recognized. This meant that the female corpse must have been soaked in the water for quite some time.

But thinking of this, Su Qing frowned again. If the female corpse had been thrown into the water for quite some time, then the ice hole should have been frozen solid. After all, it was behind a patch of reeds and no one would easily pass through it. But Xiao Heizi, an eight or nine-year-old child, stepped on the ice on the ice hole and cracked it...

With such doubts, Su Qing quietly approached the puddle. As she expected, there were guards left near the puddle. This did not pose a problem for Su Qing. She easily avoided the sight of the two guards and sneaked silently into the ice hole that had not been frozen yet.

As soon as she entered the water, Su Qing used green mist to dispel the coldness in her body and dived towards the water plants.

Because the light was very dim at night, the water was even darker. Su Qing found the water plants entirely based on her memory.

After finding the water plants, Su Qing gently grasped a leaf of the water plants and began to activate the supernatural powers in her body. Then, her perspective changed to that of the water plants, and at the same time, the picture in her perspective began to rewind.

Su Qing closed her eyes quietly and looked carefully at the scene in front of her.

In the quiet night, water plants were floating gracefully in the river, and Su Qing saw herself swimming towards the water plants.

Su Qing saw a lot of water plants densely wrapped around a female corpse. It was a young woman whose face was swollen and her skin was pale. Her long hair was entangled with the water plants. There were obvious purple marks on the neck of the female corpse. This poor girl was strangled to death.

Su Qing saw two people wearing black diving suits and diving goggles swimming towards them, dragging the female corpse out of the water plants and bringing it to the surface.

Su Qing saw herself swimming towards the surface with Xiao Heizi.

Su Qing saw Xiao Heizi fall into the water and struggle to swim back to the surface, but his ankles were accidentally entangled by water plants and the female corpse's hair. Xiao Heizi was unable to break free and struggled desperately in the water, and finally slowly lost his life.

……

One thing after another flashed before Su Qing's eyes like a kaleidoscope. No matter how hard her heart was, Su Qing felt a wave of emotion when she saw a little boy like Xiao Heizi drowning helplessly in the water.

Su Qing sighed softly and continued looking forward.

Going further ahead, there was calm and peace, without any movement or sound. It seemed that the time that could be traveled back was reaching its limit.

Su Qing couldn't help feeling a little regretful. It seemed that she would return empty-handed today.

Just when Su Qing felt there was no hope, a voice suddenly came from the ice hole.