Chapter 485 (1/2)

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Chen s.h.i.+ said, ”Don't be discouraged. Although the case seems to form a closed loop right now. I think there are still other clues to be found.”

Lin Dongxue said, ”Right. Zhang Xiao's criminal tactics were learned in prison. Would his accomplice also be someone he knew in prison? Prison is like a large-scale criminal skill exchange forum.”

Peng Sijue pointed to the water tank where the corpse was found. ”If this kind of crime wasn't taught, can most people really think of this?”

Lin Dongxue said excitedly, ”Then I'll find out who Zhang Xiao was acquainted with in prison.”

Chen s.h.i.+ added, ”Also, this person is now outside the prison. They may have been released together.”

Lin Dongxue and Xu Xiaodong left first while Chen s.h.i.+ and Peng Sijue stayed there for the experiment. There were other water tanks beside them. Of course, it was impossible to test with cyanide. Peng Sijue used sodium bicarbonate and sulfuric acid which had similar properties.

When opening the water tank, everyone was extra careful, fearing that the murderer had prepared a ”surprise” in it. Fortunately, the murderer wasn't ruthless to that extent. There was nothing else in the water tank except for foul-smelling dirty water.

At the beginning of the test, Peng Sijue asked his a.s.sistant to go to the mouth of the water tank to measure the concentration of the released matter every five minutes until about 5:00 PM. By then, the a.s.sistant said that the concentration was infinitely close to zero.

Peng Sijue and Chen s.h.i.+ looked down at their watches together, and then looked at each other. Chen s.h.i.+ said, ”45 minutes... I remember that after the police were alerted, the police came half an hour later and a dozen minutes to understand the situation. Then we went from house to house. There was more than enough time for the murderer to cover the lid and go downstairs. Would it have been possible for them to have met the police? How did they leave the community without getting suspected?”

”Dressing up as a repairman or something?” Peng Sijue asked.

”Just then, Dongxue said...” Mentioning Lin Dongxue, Chen s.h.i.+ suddenly remembered that they saw Wu Xu downstairs that day. A prisoner who was released from prison. Lin Dongxue saw Wu Xu again last night, near Zhang Xiao's residence.

Wu Xu drove a car to collect waste products, and he could enter and leave various districts at will without suspicion. Could it be?

Thinking of this, Chen s.h.i.+ hurried to call Lin Dongxue, but she didn't answer. He called Xu Xiaodong. Xu Xiaodong said, ”Brother Chen, I'm here at the property manager's place watching the surveillance footage.”

”Isn't Dongxue with you?”

”She made a phone call to Captain Lin, but then she seemed to suddenly remember something, so she took a car away.”

Chen s.h.i.+ felt his heart drop. She wouldn't have gone to find Wu Xu herself, right? Sometimes she is really impulsive.

The place where Wu Xu lived was the place where Lin Dongxue had previously rented. Chen s.h.i.+ hurried downstairs and called Lin Qiupu while driving, asking him to bring people over there.

At the same time, Lin Dongxue had just returned to the place where she rented in the past. She thought about how Wu Xu had appeared that day, and again near Zhang Xiao's residence last night. This was probably not a coincidence. Although she didn't want to think about him like that, it was precisely in line with the characteristics of the suspect.

In order to verify this, she decided to go and find Wu Xu's mother, her former landlord, to ask.

After getting out of the taxi, she discovered that Chen s.h.i.+ had just called and sent a few text messages, ”Don't act alone! Wait for me!!!” Lin Dongxue laughed at him being overly worried. She couldn't go directly to Wu Xu of course. She was just going to ask his mother things in secret.

In order to prevent Chen s.h.i.+ from worrying, she replied to him, ”I'm waiting for you by the door of my previous community. Hurry up!”

Chen s.h.i.+ replied, ”Scared me to death. You didn't tell me beforehand. Don't do anything until I come.”

”Okay, got it!”