The expert deserves to be an expert, and not long after Gao Facai arrived, new news came from the forensic department.

First of all, 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 microorganism.

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

Immediately after, heavyweight discoveries followed. Gao Facai actually detected the relevant time through the skull remains and a certain trace element in the preservative.

It turned out that the preservatives and the skull were dumped together in a metal box 5 to 7 years ago.

5 to 7 years ago, it was the time when Tao Xiang stole the Tamil Star, and he happened to pour the head of the deceased into the treasure chest at this time, what was his purpose?

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

In this way, it can be proved that other gold and silver lacquerware must have been stored in that metal box. I don't know, are those gold and silver lacquerware the treasure of pottery?

Through these three discoveries, Zhao Yu and others can roughly sort out a time context:

About 10 years ago, Tao Xiang buried a metal box in Du Manting's grave, and at that time, the metal box may have contained a lot of gold and silver treasures. Perhaps, Tao Xiang is to pay tribute to Du Manting, or maybe it is because Tao Xiang needs a place to store treasures.

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

So, that day 6 years ago seems to have become a critical node, I don't know what happened to make Tao Xiang do that?

Could it really be related to the Tamil Star?

Could it be that if you can solve this puzzle, you will be able to find the whereabouts of the treasure and the Tamil Star?

The efficiency of Gao Facai was amazing, and it was only ten minutes after noon that he made a new discovery. Through the examination of the six heads, he found that the antiseptic treatment of these skulls and the composition of the embalming liquid that were soaked in the first place were different.

The older the head, the simpler the embalming method and the composition of the embalming liquid. However, in the later period, the anti-corrosion methods became more and more advanced and sophisticated.

Although this discovery is shocking, for Zhao Yu, he has long been mentally prepared.

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

After the case occurred that year, the forensic doctors also discovered a pattern, the more headless female corpses appeared in the future, the more sophisticated their embalming methods became.

Therefore, the police believe that the murderer is also constantly trying and improving in the whole process of committing the crime. In the process of disposing of corpses, he is also looking for a more effective embalming method.

Especially when it came to Bai Lili later, the corpse was quite well handled.

The killer made a gap in the groin artery of the corpse, drained the deceased's blood with a specialized instrument, and then poured a homemade liquid from the carotid artery. This liquid not only acts as an image, but also brings the deceased to life!

It is said that this technique is only known to quite professional mortuary masters, especially the special antiseptic liquid, which is generally a family secret recipe and will not be easily passed on.

Gao Facai's autopsy report pointed out that a hole was also found in Bai Lili's skull, and he suspected that the killer might have tried to extract Bai Lili's brain plasma and wanted to try some kind of head embalming test. Moreover, on some skin tissues, traces of some kind of preservative were also found.

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

"Oops!" Looking at the reports from the forensic department, the members of the special investigation team who were originally enjoying lunch no longer had the appetite to eat, Wu Xiumin frowned while looking at the reports, and said to everyone, "How do I feel, this case doesn't seem to be so simple? There are many places that seem reasonable, but they don't seem to make sense!"

"Really, for example?" Ran Tao put down the lunch box and asked curiously.

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

"This is a good explanation, Tao Xiang doesn't have that kind of function, what can he do if he kills Cui Fangyu?" Ran Tao patted his chest and said, "I see, everything is done by Tao Xiang secretly, and it is all his wishful thinking, whether it is Du Manting or Cui Fangyu, I don't know anything!"

"Hmm...... "......If the six women killed by Tao Xiang were all for Du Manting, then why did they have to wait for so many years instead of waiting for Du Manting to bury their heads there after Du Manting was buried? Moreover, even if they waited for so many years, why didn't they just put their heads inside, but put a lot of treasures in them first, and then they went back and forth? I really can't explain it! Treasures and heads, in exchange for them, what is this for?"

"You're never married, you don't know!" Ran Tao began to joke about Wu Xiumin again, "Do you think it's easy to raise a child?" Tao Xiang needs time and money to raise Cui Lizhu, so in order to raise the child to adulthood, he dug up all the treasures and sold them?"

"I'll just say it, don't intervene when discussing the case in the future!" Wu Xiumin pouted, "Your biggest skill is to mislead the direction! Eat your boxed lunch, don't talk! Please......"

Gee......

Listening to the discussion of the group members, Zhao Yu also felt a little 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 psychology, and almost paranoia!

However, in addition to being delicate, Tao Xiang, the king of thieves, does not seem to fit these characteristics.

If Tao Xiang is really a perfectionist, then the head in the box should not look like that. The box was so big, and there was space in it, he could have put his head in it along with the bottle containing the embalming liquid!

Just like Li Dan who chopped off his hands at the beginning, Li Dan is not a paranoid in the strict sense, and he still stores his severed arm! So as the murderer of the headless female corpse case, shouldn't he be more careful to store it?

Gee...... The more Zhao Yu pondered it, the more he felt that the evidence obtained today was a bit off.

Don't...... Is there anything else hidden in this case?

Is it Tao Xiang and his accomplices, or is it ...... Tao Xiang is not the real murderer at all!?