Everyone immediately breathed a sigh of relief in their hearts.

"Notify me to immediately arrest the suspect in the two murder cases, Li Chenggong, the owner of the public bath."

Xu Shu contacted the people in the bath.

A reply soon came from the headset, and the police officer's voice was solemn, "Oh no, Team Xu, Li Chenggong ran away." ”

"What?"

Xu Shu was shocked when he heard this, "Check his whereabouts, arrest him immediately, and bring people back to me!" ”

"Li Chenggong ran away?"

Xu Ying was equally shocked when she heard the news as soon as she entered the door.

Qiao Linlin sighed, "It seems that he knows what he does. ”

"Jiang Jiang, what are you looking at?"

Xu Ying looked around, came to Jiang Qingrui's side, and asked her curiously.

"I'm looking at the carbon monoxide concentrations in other rooms, you see, none of these can reach the lethal level, at most it will make people a little uncomfortable, and it won't cause sudden death immediately, why are these two rooms so high?"

Jiang Qingrui looked at the data and pondered.

"Could it be some special solution?"

Jolene Lynn gave an idea.

"I'll go and see it!"

Jiang Qingrui and Xu Shu asked, "I think there is something on the scene that we may have ignored." ”

It was also through the sewers that entered the households, why only these three people died.

Was it an accident, or was someone murdered on purpose?

"I'll go with you!"

The first to go to Chen Yang's house.

The carbon monoxide concentration in the house has decreased, and Jiang Qingrui and Xu Shu led people to search separately.

"All this carbon monoxide enters the house, all of it goes through the sewers, could it be that there is a problem with the sewers of these two houses?"

Jiang Qingrui put forward an idea, and simply started to open the drain plug here.

"I'll do it."

Xu Shu stopped her and did it himself.

"There's nothing to see from here."

Jiang Qingrui looked at it for a while, didn't find any clues, and asked the old Chen family and his wife for the decoration of their house.

Seeing the drawings, Jiang Qingrui instantly understood.

She pointed to the sewer pipe on the drawing, "The problem of the Chen family is here. ”

"What is this?"

Xu Ying approached, observed curiously, didn't see any clues, and humbly asked for advice.

"This place is supposed to have a bend to deal with sewage."

Jiang Qingrui explained, "But there is no one on Chen Yang's drawings. ”

"You didn't design this? Why? ”

Xu Shu asked the old couple of the Chen family with ugly faces next to them.

"We Chen Yang said that it's okay without this, and it's even more difficult to block without this, so I thought it would be convenient and trouble-free, so I didn't let people get this."

Chen's mother cried and regretted, "I knew that this thing was so important, I shouldn't have listened to Chen Yang in the first place, this child, oops!" ”

Chen's mother blamed herself, and Chen's father asked Jiang Qingrui, "Comrade, is this really so important?" ”

"Hmm."

Jiang Qingrui was a little unbearable, but still told the truth, "This bend to store sewage can dissolve some of the harmful gases, if it is not removed, the concentration in your room should not be so high." ”

Then Chen Yang will not die.

Jiang Qingrui didn't finish speaking, and looked back at Xu Shu, "Let's go to Zhang Xia's place and take a look." ”

When she entered the elevator, she could still hear Chen Yang's mother's cry.

Qiao Linlin sighed, "Who would have thought that just such a small turn would cost her life." ”

"Who's to say it isn't?"

Jiang Wu's mood sank in a rare way, "Greedy for small and cheap and suffer big losses, that's what I said." ”

"That's not right."

Xu Ying was a little incomprehensible, "Could it be that Zhang Xia's family, like Chen Yang's family, did not design a bend, would it be so coincidental?" ”

"Contact the landlord first and ask for the drawings of the house."

Jiang Wu started again, "Maybe it's such a coincidence, just because the two families are trying to save money, maybe they didn't design this thing." ”

Xu Ying shook her head, "I don't think so." ”

"I think so, what, bet?"

Jiang Wu and Xu Ying began to bet again on the cause of the high carbon monoxide concentration in Zhang Xia's residence.

Jiang Qingrui was very helpless after hearing this, got out of the elevator, and soon received the drawings.

There are design loops on it.

And after testing, there is indeed a design.

"That's weird, what's going on with their family?"

Xu Shu frowned and walked around the room.

Jiang Qingrui also looked at other places in the house and found garbage that had not been thrown away.

There are also quite a few takeaway boxes inside.

Takeaway?

Jiang Qingrui's eyes lit up, and she immediately called out to Xu Shu, "Can you check the consumption records of Zhang Xia and Qian Yuan." ”

"No problem!"

Xu Shu looked at the garbage basket and guessed something, "Are you suspicious, is it because of the takeaway?" ”

"Yes!"

Jiang Qingrui nodded, "If they don't fire, they don't use this bend very much, then it is very likely that the gas will come up directly down the pipe." ”

"You guessed it right!"

Xu Shu turned on his mobile phone and motioned to Jiang Qingrui to look at the consumption list sent by his colleagues, and in Qian Yuan and Zhang Xia's bills, takeaway accounted for most of them.

"Then you might as well do another experiment."

Jiang Qingrui proposed that in order to be rigorous and responsible for this result, she used the drainage in the house again.

This time, the carbon monoxide concentration in the house was really reduced, not much different from other residents.

"Team Xu!"

At this time, the police officer in charge of chasing Li Chenggong brought back the news, "We found Li Chenggong's traces on the outskirts of Haishi, and the other party is fleeing in the direction of Xiping." ”

"If I remember correctly, that side is a well-known urban-rural junction here, and the personnel are mixed, so immediately notify the police station over there and cooperate with us to arrest them."

Xu Shu's brows can almost kill flies.

"Team Xu, I'll go for reinforcements, and I'll definitely bring people back to you."

Jiang Wu took the initiative to ask.

"Okay, go ahead, stay safe."

Xu Shu still has a lot of work here that he needs to preside over personally, and he can't leave at all, so he can only tell Jiang Wu.

"It can be seen from Li Chenggong's exchange of coal that he has some guesses about the death of these two people, so he ran away during our experiment."

Xu Shu hung up the phone and said to Jiang Qingrui.

"If we hadn't done a second experiment under pressure this time, there would have been no evidence to arrest him."

Jiang Qingrui nodded, "People's hearts are not enough to swallow elephants, what he is talking about is a person like him, who knows that this kind of behavior is so harmful, but he still wants to take risks, and he feels that if he is lucky, he will definitely not have an accident, but he doesn't know that when something really happens, it will be too late." ”

The work of this community was completed, and Xu Shu and others evacuated.

As soon as he got out of the community, Xu Shu received a call from Jiang Wu.

The other party was beaming with joy and couldn't hide his excitement, "Team Xu, fortunately, this Li Chenggong really wanted to take advantage of the chaos to run by boat, fortunately, with the cooperation of the comrades from the police station here, we happened to be holding down." ”

"I'll take someone back now!"

Jiang Wu hung up the phone, Xu Shu solemnly looked at everyone, and informed: "Li Chenggong, catch it!" ”