Wen Jianguo picked up another tweezer and went to the right to check.

After a while, the same tampon was taken out and mercury flowed out of it.

Chen Yan frowned slightly: "Old Wen, Master, have you seen this situation before?"

This is the first time Chen Yan has encountered this situation.

Why do you need mercury in your ears?

Liu Qingshan frowned: "I haven't seen it before, but I heard from my senior once a long time ago."

"I just started working for a short time and encountered a trafficking case."

"I heard from the master who took me at that time that this is a means for human traffickers to deal with deaf and mute people."

Wen Jianguo also nodded: "Long-term injection of mercury into his ears will lead to permanent hearing disorders."

"However, this method will not cause stress trauma to the body, and there will be no harm other than deafness."

"In the early years, many human traffickers used this method to deaf children."

“Then go out to beg.”

"When the child grows up, some boys become minions and some sell them out of black coal mines."

"Of course, I'm not doing this now."

Wen Jianguo took out a cigarette and handed it to Chen Yan and Liu Qingshan: "Now, selling organs is more profitable than doing anything..."

"As for girls, most of them are sent to places of love and mist."

"Because these people have been abducted and trafficked since childhood, some are deaf, some are dumb, and they are not educated, and they can't write."

“So, even if you catch it, you rarely provide valuable clues.”

Liu Qingshan took the cigarette handed over by Wen Jianguo and sighed.

"Some time ago, when we were following the mute girl in a nightclub, we accidentally discovered Song Wenlong, a leader who controlled the trafficking of Liancheng."

"But they may have been alert, and before we came to the railway market, everyone was missing collectively."

"The clue shows that they rented a bus and came to the iron city."

"After I came here, I went to visit and investigate for a period of time and basically locked in this Songjia Village..."

"Yesterday, it was our first time to go into the village to investigate. Unexpectedly, something happened just after we came in."

According to the clues investigated by Liu Qingshan, this is an organized and disciplined trafficking gang with very clear internal workers.

In Liancheng, Liu Qingshan has set up a total of three begging children, as well as a mute girl who once worked in a nightclub.

There are four people in total.

But don't underestimate the other party only controls four people.

Liu Qingshan has followed each of them.

Every little beggar has gained a lot every day because of his miserable appearance.

On average, a person can receive about 300 yuan a day.

The three little beggars cost about one thousand yuan a day.

In addition, the mute girl is in a nightclub and can accompany at least two groups of guests every day.

Every time I go to the nightclub, I can earn half of it and earn at least 1,000 yuan a day.

"And these incomes will eventually enter Song Wenlong's pocket."

"In other words, just by controlling these four people, Song Wenlong can earn 2,000 yuan a day, and 60,000 yuan a month!"

"We don't know how many such little beggars under Song Wenlong's men, or people like mute girls!"

Liu Qingshan's words made Chen Yan feel a little disbelief.

He had never been exposed to similar cases before.

Not to mention the nature of the work of a mute girl, she just talks about begging.

Chen Yan had seen many of them when he was young.

At that time, there were many beggars on the street, and some areas where people gathered, and even surrounded by more than a dozen beggars was nothing new.

However, in recent years, begging is basically impossible to see.

Only some homeless people can still see them.

But these people are also registered, and volunteers will regularly send food, clothes, bedding and other daily necessities.

For example, Chen Yan's second detective team has 16 registered homeless people.

"So, there are two directions for case investigation now."

Chen Yan looked at Liu Qingshan: "One is looking for the murderer who killed Zhang Jiantao."

"The other one is to find Song Wenlong!"

Liu Qingshan nodded: "And, Song Wenlong is likely to be the murderer."

[Ding! The strongest police training system task released.]

[Detecting the murder case of police attack, with a limit of seven days, completing the task, rewarding vehicle maintenance skills and specializing in task maintenance, and canceling the task reward if it fails or exceeds the deadline.]

Don't pay too much attention to the system prompt information in your mind.

Chen Yan immediately began the case investigation.

...

Zhang Jiantao's body was soon sent back to the Iron City Detective Team.

Wen Jianguo must start dissection immediately.

Chen Yan and Liu Qingshan continued to stay in Songjia Village.

Wang Shun has already led several teams to investigate the suspicious places mentioned by Chen Yan.

But it is very difficult.

In the urban village, there are very dense buildings and very large personnel mobility.

There are at least hundreds of small bathhouses, massage rooms, and traditional Chinese medicine massage.

Moreover, this urban village is only equipped with surveillance cameras at important intersections.

Like Zhang Jiantao's dead end where he was abandoned, the surrounding area was monitored.

Moreover, in the alleys of the urban village, many people were pushing shelf trucks to deliver goods.

If the other party disguises himself as a migrant worker delivering goods, there is no way to compare and search.

Chen Yan also knows that such large-scale investigations will be difficult to gain.

However, such large-scale actions will definitely limit the other party's further actions.

At least give a deterrent effect.

Make the other party dare not act rashly during this period.

As long as the other party does not leave this, it will only be a matter of time before Chen Yan finds the other party.

Taking Liu Qingshan, Chen Yan shuttled through every alley in the urban village.

"Chen Yan, we are..."

Two hours later, Liu Qingshan was almost fainting: "What are you looking for?"

Liu Qingshan thought Chen Yan was like Wang Shun and the others, and wanted to find the crime scene.

But along the way, Chen Yan has been walking fast.

There were about a dozen massage parlors and bathhouses passing by, but some of Chen Yan went in and looked at them, while others didn't even go in.

Looking into a dead end, Chen Yan suddenly stopped: "Master, the village in the city is so big."

"If you want to find Song Wenlong, it's like looking for a needle in a haystack."

"And, the other party is obviously very familiar with this place. Otherwise, Zhang Jiantao would not have been discovered by the other party just after he came in to inquire about the other party."

"So, if you want to find him, someone must give us the direction!"

As he said that, Chen Yan pointed at a thin figure in the alley.

It was a little beggar.

When Liu Qingshan saw the little beggar pointed at by Chen Yan, his eyes lit up: "Are you talking about following this little beggar?"

"track?"

Chen Yan shook his head and pulled Liu Qingshan away from the entrance of the alley, as if he had just passed by naturally just now.

"Master, here, people are the local snake."

"It's not easy to track them!"
To be continued...