Mo Xiaoqing couldn't figure out what was going on, so she could only take a photo. She put the lesson plan book back to its original place, and suddenly something fell out of it.

When she picked it up, she saw that it was a moon-shaped badge with a half red sun hidden behind clouds.

She continued to look and turned to an address book with business cards in a transparent folder and some contact records of relatives and friends.

Turning it further, she found a half-crumpled piece of note in the transparent business card holder, and half of it had disappeared.

Looking closely, it said "FAN..."

Mo Xiaoqing looked at these English letters and felt that she had seen them somewhere before.

But she didn't have time to think carefully because there was an unusual noise outside.

Mo Xiaoqing was afraid that Teacher Chen had returned home, so she quickly retreated from the study. She didn't dare to sneak out through the main door, but fortunately there was a small door behind the kitchen.

She stepped through the small door silently and climbed over the wall again. As

soon as Mo Xiaoqing left, Chen Xiaoshi took out the key and opened the door. He had a keen intuition that someone had come to the house, so he quickly rushed over and pushed open the doors one by one to check.

Finally, he stopped at the door of the study and saw the half-printed footprints on the white paper scattered on the floor. Chen Xiaoshi turned around and rushed to the door of Granny Liu's house and asked:

"Granny Liu, has anyone come to see me recently? Did you see anyone enter my room just now?"

Here,

Xu Yao led everyone to step into the chemical warehouse again. After entering the room, he stared at the huge machine in front of him with bated breath and said:

"Xiao Liu, come on, some people, lift it up and have a look!"

Liu Xiaobo led a few police officers to try to lift the machine, but it didn't move at all. They tried four or five times without success. They

couldn't help but start to doubt: "Captain Xu, this machine can't be lifted at all!"

Xu Yao said nothing, raised the flashlight to check the rusty machine, pressed all the visible buttons, but none of them worked.

But the four legs of the machine had obviously been moved, and Xu Yao was confused. Could it be that his judgment was wrong, and there was no secret passage in this room?

Suddenly, he shone a part that was much brighter than other places. He reached over and pulled the part to the right. Thick iron bars extended from the four legs of the machine and lifted the whole machine.

Xu Yao tried to push the machine, but he didn't expect that the machine really moved slowly to the side without any effort. After moving the machine away, a wooden door appeared.

Liu Xiaobo opened the door, turned on the flashlight and walked in first, exclaiming: "Captain Xu, there really is a secret passage in here."

Xu Yao told everyone to be alert and not to be careless. The situation inside is unclear and danger can happen at any time. Load your guns!

Everyone entered the secret passage one after another.

It was pitch black inside. Liu Xiaobo turned on the flashlight and shone it around. This was a man-made tunnel with a layer of cement under his feet. An electric wire was hung on the wooden strips on the top, leading all the way to the painted tunnel in front. The tunnel was dark and extended.

Xu Yao and the others walked forward, groping their way for about four or five hundred meters, and unexpectedly came to two forks in the road.

He raised his flashlight and shone it carefully around. The tunnel was made of mud. Xu Yao reached out and touched the mud wall, and found that the mud was mixed with sand.

He divided the five or six police officers who followed him into two teams and continued to search.

Five minutes later, the other team reported to Xu Yao that the tunnel led to the city's underground drainage. The

police checked the geographical location of the place and found that the sewage pipe that was connected to it might be the sewage pipe leading to the Binjiang River.

After another three minutes, the tunnel that Xu Yao led the search also came to an end.

He kicked the iron gate open and stuck his head out. The black and smelly sewage flowed past, with all kinds of garbage floating on it.

This should be the underground pipeline of Kuala Kangsar City.

Obviously, there was no need to search further, so Xu Yao returned the same way and walked to another place. Just as he passed by

, he heard a police officer's surprised report, "Captain Xu, look, there are traces of blood in the mud at the edge of the tunnel.

" Liu Xiaobo analyzed it immediately, "Captain Xu, so the murderer killed the person and dismembered the body, and then threw the body into the sewage pipe through this secret passage and rushed to the Binjiang River."

Xu Yao couldn't help but frown. Now he would have a headache whenever he thought about something, and his thoughts were getting more and more confused.

"If such a long tunnel was dug manually, it would have taken at least a year. It should not have been dug recently. It obviously existed before. It is possible that the murderer had dug it before, or it may have been discovered by accident. He led Xiang Xinyi to this chemical warehouse so that he could commit the crime without anyone noticing."

A police officer chimed in, "He is very experienced. He dismembered the body and threw it out from the secret passage. And this sewage pipe is sloped, so it is easy to be washed into the Binjiang River and destroy the body without a trace!" Xu

Yao couldn't help but sigh. How much hatred and resentment must they have to murder them so painstakingly! Now it seems that Deng Yaohua is even less likely to be the dismemberment murderer.

Xu Yao began to mutter to himself again: "We have been investigating for so long, but we haven't found out that the twin sisters have offended anyone powerful. Should we silence them?" The

surrounding police officers looked at each other, but couldn't tell the reason.

Xu Yao had to call the team back.

He asked the police officers to search thoroughly, collect all possible clues, and conduct tests and verification.

When Xu Yao returned to the police station, it was already past four in the afternoon.

Mo Xiaoqing was also busy in the office.

She collected all the clues about Chen Xiaoshi that she had recently found, and sorted out the evidence found in Chen Xiaoshi's home one by one.

First, Mo Xiaoqing remembered the half piece of note paper with the letters "FAN" printed on it, and finally remembered where she had seen it.

After opening the computer, Mo Xiaoqing clicked on the twins' Weibo account and found the original Weibo post. One of the Weibo posts contained a complete message, "FAN14520".

If it was a love confession as the Weibo post meant, it would most likely be "Fang, I will love you forever. I love you.

However, the Weibo post mentioned that her mysterious lover looked panicked when the twins broke in, which was probably just a temporary excuse.

Then change the thinking hypothesis, this note is not a code word for confession, but a shady transaction information. And it happened that the twins broke in on Xinfang at an inopportune time, causing the other party to lie and say that it was written for her.

Mo Xiaoqing's mind was working rapidly, and her speculation became bolder and bolder.

She suddenly remembered that when she was sorting out the cold case files in the past few days, there were several cases of homeless people being killed, and they were also missing several organs.

And at that time, Team Xu mentioned a very strong evidence. In those cases, one of the deceased drew a moon pattern on the ground before his death.

Mo Xiaoqing remembered that a moon-shaped badge fell out of Chen Xiaoshi's lesson plan book.

Could there be a great connection between them?