"I should be able to narrow it down!" Xu Guoran stared at the skeleton for a long time, and during this time, he took the skull and looked through it carefully a few times.

This news can't help but make Liu Yihang and Wei Chongyu overjoyed, criminal psychology expert Dong Yanqiu has already said that this victim is a breakthrough in the case, and only by finding out her identity as soon as possible can a huge breakthrough be made in the interrogation.

"This girl has an intellectual disability!" Xu Guoran pointed to a place where the skull joined and explained, "There is a deformity in this part of the skull, and after ten years of burial in the ground, it has become more obvious due to the action of soil acids and alkaline substances. I've read medical research before, it's a rare genetic mutation that prevents bone formation and prevents the small hole in the back of the braincase from closing before birth, a process that usually occurs before the fetus develops, and is closely related to inbreeding, and its children are generally prone to intellectual defects! ”

"Mentally retarded!" Liu Yihang repeated Xu Guoran's conclusion, "I have also examined it before, and the left leg of this skeleton is also disabled, so it is very likely that she is a resident of this province and city." With her intellect and mobility, it is almost impossible to complete the act of migrating long distances alone! ”

"Well, judging from the degree of bone healing, this injury on her left leg was left when she was a child, but it was not well healed, causing her to walk with a little lameness, but it had too much impact on her movement and labor!" "Moreover, judging from the characteristics of bones such as teeth and joints, it is a symptom of endemic fluorosis. In addition, there are some changes in the shape of her pelvis, which may be caused by early childbirth, or the size of the fetus! ”

Endemic fluorosis is a chronic systemic disease characterized by skeletal fluorosis and dental fluorosis caused by excessive fluoride ingestion in the environment of a certain area, which causes residents living in the environment to ingest excessive fluoride through drinking water, food and air for a long time.

Hearing these analyses, Wei Chongyu's eyes couldn't help but light up, and he finally saw hope. Through the analysis of Liu Yihang and Xu Guoran, a series of key words have been summarized by him: accompanying the city, rural areas, mountainous areas, key areas of fluoride pollution, close marriage with children, left leg disability, congenital intellectual disability, early marriage, and childbirth.

With these information, if the victim cannot be found, Wei Chongyu will not have the face to continue to be the captain of this criminal police brigade.

"Miss Xu, can you help us draw a portrait of the victim?" Wei Chongyu asked earnestly.

"Yes!" Xu Sure nodded.

Xu Guoran gave a series of descriptive words, and under the operation of the portrait artist, a face became more and more vivid on the computer monitor, and it took about an hour for a simulated photo of the victim to finally take shape.

Xu Sure ran glanced at it and said to himself sympathetically: "She is so beautiful, she can't see some defective characteristics unique to the children of close relatives from her appearance, but her fate is a little too tragic!" ”

It was a delicate and beautiful girl, because of intellectual disability, her expression looked a little dull, but it was difficult to hide her beauty, such a beautiful girl was not only discriminated against by others after birth, but also had a bad fate, and passed away when the good years were not fully blooming.

The matter finally came to an end, and Mu Yuan proposed to leave the inspection and appraisal center, of course, before that, it was inevitable that Wei Chongyu would keep it secret. Because Wei Chongyu was in a hurry to deploy the task, the task of sending Mu Yuan and the three of them out was handed over to Zhang Ding, who was also an old acquaintance.

"Muyuan, what are you doing with a bag of copper coins?" Zhang Ding asked curiously, he saw this bag just now.

"Oh, I bought a little copper money, I bought it for fun!" Makihara explained.

"Oh, play, that's okay, if you want to collect it, forget it, this copper coin is fake!" Zhang Ding reminded.

"What? Fake? Mu Yuan was taken aback, "Brother Zhang, haven't you seen it!" ”

"How is it possible, I saw it just now, it's definitely fake!" Zhang Ding said with certainty.

"This kind of thing is also fake?" Mu Yuan meant that this kind of thing for one or two dollars why bothered to fake it, but as soon as the words came out, Mu Yuan regretted it, because several other people looked at him like idiots. As long as there is a profit, there will be a copycat, is this antique toy counterfeit still a new thing?

"It's not all fake, it's basically half of the proportion!" Zhang Ding pointed it out to Mu Yuan and explained, "This kind of counterfeiting method is still relatively simple, and the method used is stir-frying." ”

This kind of counterfeit money is slightly smaller in diameter than the real coin, the shape and text are basically the same, the appearance is more difficult to distinguish, and the new sand can produce any age of ancient money as needed, after the completion of the only slightly longer patina can enter the market.

In addition to sand casting, the main means of counterfeiting in the ancient coin market are re-engraving, patching, assembling, beating, word shifting, corrosion, etc.

"The copper coins you buy are very common ancient coins, and the market price is relatively low, generally a few cents a piece, and the wholesale price is based on catties, but because of some feng shui needs, some people in the market have already used the method of stir-frying to make them in large quantities!"

Listening to Zhang Ding's explanation, Mu Yuan's face began to darken, and the things he bought were not only mixed with a large number of counterfeit money, but also the purchase price was quite high, spending several times more.

"Brother Zhang, which ones are real and which ones are fake?" Makihara asked.

"It's easy to tell by the smell, the smell and the rust!" Zhang Ding said, "The oxidation time of real money is very long, and the oxidized copper smell is relatively small. If you lick it with your tongue, real money has no taste, while fake money has a heavier sour taste. ”

Xu Ran and Ling Xin on the side couldn't help but feel disgusted when they heard this, although they didn't play antique literature, and they rarely came into contact with this aspect, but there were often reports of ancient tomb excavations in newspapers and television, and most of the princes and princes unearthed the most ancient coins in the tombs, and the large amount unearthed could even be counted in tons. The thought of licking the burial goods in the tomb with his tongue made the acid water in his stomach rise vigorously.

"Besides, you can use a sharp object such as a needle to pierce it after you go back, there is no way to pierce the real ancient money, but the fake ancient money has this possibility! In addition, you can also boil it in water for 20 minutes, and the rust color of the fake money will generally fall off! ”

While listening to it, Mu Yuan memorized all these silently, and it seems that after going back, it is still the most convenient method of boiling with water, and it can be done at one time.

Bidding farewell to Zhang Ding, the three of them walked out of the gate of the inspection center, and Ling Xin drove her Buick all the way to Beidu University. On the way, Makihara called the three brothers in his brother's dormitory to get together. Ling Xin didn't have much interest in this, she was going to clean up her younger brother in the past, she wouldn't forget the comment of "big breasts and no brains, nothing to look for", the so-called revenge and revenge, if you don't beat him well, her status as an aunt and grandmother is estimated to be unable to be kept in the future.

"Boss, I haven't seen you for the past two days, have you gone somewhere to make a hole?" The boss Zheng Bu looked at Mu Yuan's dirty placket and teased.

Mu Yuan has not seen anyone in the past two days, and he hasn't even returned to the dormitory, and he only knew what he was doing with Yin Hao when he inquired, but Zheng Bu used all kinds of means to Fu Wei, and he couldn't get half of the truth from Yin Hao.

Before Mu Yuan could prevaricate these two elder brothers, Ling Xing's screams came from behind him, and the Demon Queen had already started fighting.

"I'll go, how did the third child provoke this sister, this subordinate is really black!" Fu Wei was shocked, "Is this my sister?" No matter how you look at the third child, it looks like he was adopted! ”

It turned out that Ling Xin was jogging around the car with Ling Xing's ears, Ling Xing's scream was no different from killing pigs, although Xu Ran was helping to rescue him, but it obviously had no effect.

"Don't say it, don't provoke this sister today, I was kicked by her!" Makihara said "showing off" the footprints on his ass.

When Zheng Bu and Fu Wei heard this, they didn't have the heart to ask Mu Yuan, and they all stood aside to mourn for the third child. However, at dinner, they didn't let Mu Yuan go, and Ling Xing, he felt that today's unwarranted disaster was caused by Mu Yuan, and he teamed up with the eldest and second child to die to irrigate Mu Yuan, so that Mu Yuan didn't know how to return to the dormitory.