Xu Yao walked closer and saw that the classification of the books and the mailing address were written in neat handwriting on each cardboard box.

Looking at the addresses above, they are all welfare homes across the country. If you ignore the bloodstains on the entire wall opposite the bed, this room looks very warm.

But the bloodstains on that wall are really too hideous and terrifying. The red and black chicken blood covered the entire wall. Xu Yao carefully observed the handwriting above and was sure that it was definitely not left by Liu Lixuan.

He lowered his head and grabbed a handful of paper airplanes on the wooden floor, his brows wrinkled deeper and deeper.

Slowly, his hands couldn't help but tremble a little. Xu Yao didn't dare to think about it in detail, but various evidences proved that the murder cases he encountered recently were not as simple as they seemed.

Xu Yao wiped the bloody signature with his rubber-gloved hand, ym.

He suddenly remembered that in the last twin murder case, a suspect, the madman He Yaohua, accidentally fell from the roof. Not far from where he fell, there were also these two English letters.

What exactly does ym mean?

Xu Yao turned his head to look at Lin Yalin who was squatting on the ground and carefully checking Liu Lixuan's body, and asked,

"Sister Ya, has the cause of Liu Lixuan's death been found?"

Unexpectedly, Lin Yalin looked at Xu Yao deeply and remained silent.

Xu Yao urged anxiously, "Sister Ya, please tell me quickly."

"After the mistake in our department last time, I now have some distrust in my own professionalism."

Xu Yao was shocked and felt guilty that as a friend of Lin Yalin, he had not cared about her mental state at all recently.

He had no choice but to slowly walk over and squat beside Lin Yalin, stretched out his hand and patted her on the shoulder,

"Sister Ya, don't think so. We have cooperated for so many years. Don't you think I still don't trust your professional level?" Xu Yao looked at Lin Yalin tenderly and encouraged her to continue.

"After careful examination and observation by me and my two assistants, many signs indicate that he died of suicide.

In order to prevent me from making the same mistake as last time, I will go back and conduct further examinations to give you a definite answer." Lin Yalin said after a breath.

Xu Yao stood up, stared at the blood stains on the wall, and then looked at the boxes of packed books next to the bookcase in the bedroom. He already had the answer in his mind.

"In fact, even if Sister Ya doesn't do a deep test, I can be sure that Liu Lixuan did commit suicide.

When I came up from the room just now, I saw that all the art paintings hanging on the wall in his room had disappeared.

And the books in his bedroom were neatly packed and labeled with addresses to be sent to various places.

It is obvious that doing these tasks requires a lot of time, and it is impossible for the murderer who broke into the room to complete them step by step.

The handwriting in the suicide note that Lao Tan found just now is steady, clean and neat. He must have been in a state of mind when he wrote these words, Very stable, which means no one forced him. I am sure the handwriting inside is indeed from Liu Lixuan.

Lin Yalin did not join the discussion. She got up, packed up a dozen tools, packed them neatly into the box, left with two assistants, and asked the criminal police to transport the body back to the forensic room of the criminal police team.

The technical department and trace investigation department that stayed behind were still working, but Xu Yao stood alone in front of the wall with bloody words, not saying a word.

Liu Xiaobo walked over and tried to ask, "Captain Xu, do you see anything from this?"

"The bloody words on the wall were not written by Liu Lixuan at all. Why would someone come in and leave these bloody words, and these paper airplanes on the ground?" Xu Yao held his chin and muttered to himself.

Liu Xiaobo read the bloody words on the wall, "Karma, ym. Could it be that these were left by a mysterious person for Liu Lixuan, but didn't you all say that Liu Lixuan committed suicide?"

Xu Yao began to mutter to himself again, "Yes, who are these bloody words for?"

As he spoke, his brows wrinkled more and more tightly, and his nails almost dug into his flesh.

If Lixuan had folded these paper airplanes that were about to cover the ground by himself, it would take at least three days and three nights.

But Liu Lixuan came back last night, and it has only been less than 12 hours since today, so these paper airplanes must have been brought into this bedroom by someone else.

Xu Yao's mind once again presented the whole box of paper airplanes he saw in the trunk when Chen Xiaoshi was hit and killed.

The picture was so similar that Xu Yao realized that perhaps a pair of eyes had been hiding in the dark and silently monitoring everything a long time ago.

He rubbed his stinging temples, turned his head and said, "You all should leave, go back and rest early, and continue working tomorrow."

Before leaving, Lao Tan reminded Xu Yao to remember to read the suicide note carefully.