The expert is worthy of being an expert. Not long after Gao Facai arrived, new news came from the forensics department.

First, Gao Facai extracted a common soil microorganism from the surface of the metal box, and calculated the year when the metal box was buried in the soil through the growth cycle of the microorganisms.

According to his calculations, Tao Xiang's metal box was buried there 10 to 13 years ago, and Du Manting died 21 years ago. This discovery shows that Tao Xiang did not bury the box after Du Manting was buried.

Immediately afterwards, heavyweight discoveries followed one after another. Gao Facai actually detected the relevant time through the wreckage of the head and some trace elements in the preservative.

It turned out that the preservatives and the head were dumped into the metal box together 5 to 7 years ago.

5 to 7 years ago, it was exactly the time when Tao Xiang stole the Tamil Star. He happened to pour the head of the deceased into the treasure chest at this time. What was the purpose of it?

Soon, Gao Facai led his team to detect trace amounts of lacquerware and gold and silver powder from scratches inside the metal box using some chemical method.

In this way, it can be proved that other gold and silver lacquerware should have been stored in that metal box. I wonder if those gold and silver lacquerware are the treasures of Tao Xiang?

Through these three discoveries, Zhao Yu and others can already roughly understand a time context:

About 10 years ago, Tao Xiang buried a metal box in Du Manting's grave. At that time, there might be a lot of gold and silver treasures in the metal box. Perhaps, Tao Xiang was to pay tribute to Du Manting, or perhaps because Tao Xiang needed a place to store treasures.

However, one day 6 years ago, Tao Xiang took out the treasure from the box and replaced it with the head of the deceased!

So, that day 6 years ago seemed to have become a key node. I don’t know what happened, which made Tao Xiang do that?

Is it really related to the Tamil Star?

Is it true that if this problem can be solved, the whereabouts of the treasure and the Tamil star can be found?

The efficiency of making money was amazing. He made a new discovery just ten minutes after lunch. Through the examination of the six heads, he found that the anti-corrosion treatment methods of these heads and the preservative liquid soaked in the first place were different.

The older the head, its anticorrosion method and anticorrosion liquid composition are very simple. However, in the later stages, the anticorrosion method became more and more advanced and more sophisticated.

Although this discovery was shocking, Zhao Yu was mentally prepared for him.

Because Gao Facai's discovery is very consistent with the autopsy report on the headless female corpse case.

After the case was revealed, the forensic doctors also discovered a rule that the more the headless female corpse appeared later, the more clever the anticorrosion methods became.

Therefore, the police believe that the murderer was constantly trying and making progress throughout the entire crime. In the process of dealing with the corpse, he was also looking for better anti-corrosion methods.

Especially when it came to Bai Lili's body later, the body was handled quite well.

The murderer made a gap in the groin of the corpse, drained the blood of the deceased with a professional instrument, and then poured a homemade liquid into the carotid artery. This liquid not only plays a role in the appearance, but also makes the deceased come to life!

It is said that only professional embalmers will understand this technique, especially the special anticorrosion liquid, which is generally a family secret recipe and will not be easily spread.

Gao Facai's autopsy report pointed out that a hole was found in Bai Lili's head. He suspected that the murderer might have tried to extract Bai Lili's brain and wanted to try a certain head anticorrosion test. Moreover, traces of some skin tissues were also found.

As a result, various signs show that the murderer has put a lot of effort into the treatment of the corpse, and killing is more like an experiment, which is obviously beyond the psychological scope of ordinary murderers.

"Oh!" Looking at the reports from the forensic department, the members of the special group who were enjoying lunch no longer had the appetite to eat. While looking at the report, Wu Xiumin frowned and said to everyone, "Why do I feel that this case seems not that simple? Many places seem reasonable, but they seem to be unable to explain it!"

"Is that true? For example?" Ran Tao put down the lunch box and asked curiously.

"Look... Tao Xiang likes that woman and does not allow anyone to bully Du Manting. Whoever dares to offend Du Manting will make someone a headless female corpse!" Wu Xiumin frowned, "But why didn't he kill Cui Fangyu directly? Don't you think it was Cui Fangyu's betrayal that led to Du Manting's death? Moreover, not only did he not kill Cui Fangyu, but later helped Cui Fangyu find the child. Isn't this unreasonable?"

"This is a good explanation. Tao Xiang doesn't have that kind of function. What can I do if I kill Cui Fangyu?" Ran Tao patted his chest and said, "I see, everything is what Tao Xiang did secretly, and it is his wishful thinking. No matter it is Du Manting or Cui Fangyu, I don't know anything!"

"Well... tsk..." Wu Xiumin said again, "If the six women Tao Xiang killed were all for Du Manting, then why did you have to wait for so many years to bury Du Manting after he was buried? Moreover, even if you wait for so many years, why didn't you put your head inside directly, but put a lot of treasures first and then flip back and forth? It really doesn't make sense! Treasures, heads, exchanged, what is this for?"

"You have never been married, you don't know!" Ran Tao began to joke with Wu Xiumin again, "Do you think raising a child is easy? Tao Xiang takes time and money to raise Cui Lizhu, so in order to raise the child, he poached all the treasures and sold them?"

"I'll just say that you'd better not interrupt when discussing the case in the future!" Wu Xiumin pouted, "Your greatest ability is to mislead the direction! Go eat your lunch box, don't talk! Please..."

Tsk tsk...

Listening to the group members' discussions, Zhao Yu also felt something strange. He also felt that there were indeed many strange things about Tao Xiang.

Moreover, Tao Xiang's personal situation is also very different from many of his previous speculations.

For example, judging from the details of the murderer's handling of the headless female corpse, this person must be a perfectionist with a delicate mind, a gloomy mentality, and almost paranoid nature!

However, in addition to being delicate in mind, the thief Tao Xiang does not seem to meet these characteristics.

If Tao Xiang is really a perfectionist, the head placed in the box should not look like that. The box is so big and there is space inside. He can completely put the head and the bottle containing the anticorrosion liquid!

Just like Li Dan who was in the shop, Li Dan was not a strictly paranoid, and he even stored his cut down arms! So, as the murderer of the headless female corpse case, shouldn’t he be more careful in storing it?

Tsk tsk... The more Zhao Yu thought about it, the more he felt that the evidence obtained today was a bit off-the-scenes.

Could it be...there are other hidden information in this case?
Chapter completed!