He Xingchen flipped through the two photos and studied them over and over, "If I have to say that there is any problem, it is probably that this blood stain is a little shallow and too close to the ground."

If Lu Qihua was crushed to the ground and then his throat cut, the blood stains would generally go to at least the knee level of an adult. ”

Su Tong also nodded in agreement when he listened.

"Eh, I have a question in mind." He Xingchen put the photo down. Su Tong waited to hear what he had to say next.

"A normal adult, the carotid artery is cut, and the blood is sprayed at a distance of at least two meters." He Xingchen closed his eyes and was thinking.

"The study where we think he was killed, and the guest room where the body was abandoned, from the ground to the ceiling, is usually four meters, and it can be explained that it can't be splashed on the ceiling, but what about the murderer?"

He Xingchen opened his eyes suddenly, "Even if the murderer had made preparations earlier, he would still be sprayed all over his face by these bloods, but why did he only leave a drop of blood on the sheet when he went to kill Lu Qihua's wife and daughter?" ”

Su Tong was also woken up, "I know why he put the deceased in the bathroom!" Su Tong said with surprise, He Xingchen looked at Su Tong.

"If the murderer kills Lu Qihua, his first reaction is to hide Lu Qihua. The murderer was able to accurately transfer Lu Qihua to the bathroom of the guest room, without accidentally breaking into the rooms of the other two people who were still sleeping, which shows that the murderer is extremely familiar with the environment in which the crime was committed. ”

"But how do you explain the blood?" He Xingchen knew that Su Tong's guess was good, but there were still things that couldn't be explained.

"If the murderer just wants to hide Lu Qihua, he doesn't need to hide in the bathtub of the bathroom of the guest room at the end of the corridor, just find a wardrobe and install it.

The only thing that makes sense is that the murderer is familiar with Lu Qihua's home. But what is the whole pot of blood, and these two blood stains? ”

"Also, what method did the murderer use to quickly collect the blood of the deceased?" Su Tong then threw out another question, there were too many questions like this, so many that it was overwhelming.

"Let's first follow what the boss said, let's sort out the relationship between Lu Qihua and Lu Tingkang first, otherwise we won't make any progress in the short term."

He Xingchen didn't know that these problems were originally discovered by themselves, but now they can't explain the principle of what happened, but it won't be good to die, and it's better to change directions.

"Now it can only be like this, I hope that Old Chen's side can have results soon." Su Tong sighed. The two walked out of the monitoring room and returned to He Xingchen's seat.

He Xingchen's computer was downloading a report from the medical examiner.

"What's taking so long to download?"

This is what they started downloading as soon as they received Chen Lao's second report, and according to the speed of He Xingchen's computer, it is impossible that they have not finished downloading it after the meeting.

"Oops, I forgot to turn the filter back." He Xingchen clicked on the download content to check and found that a lot of related documents had been downloaded.

"What kind of document is this?" Su Tong looked at the full number of documents in the download list, a little curious.

"When we were investigating the dry well case before, in order to track down the criminal records of the criminals, I screened all the relevant criminal documents across the country, which not only included local news, but also all blood sample information, fingerprints, etc., as long as there were similar ones, they would be screened and downloaded."

He Xingchen explained as he tried to stop the downloader.

"Damn, I can't stop, I can't reload it until it's downloaded on its own." He Xingchen tried several forced pauses, but there was no way, and the software he designed for himself was too impeccable.

"And what were you trying to download?" Su Tong asked.

"Originally, I downloaded Lu Qihua's blood analysis report sent by Mr. Chen."

"Lu Qihua is forty-two years old this year, even if he started committing crimes at the age of ten, it is impossible to have a criminal file from 50 years ago or 60 years ago?" Su Tong pointed to the files in the download list, there were several unfinished documents from fifty and sixty years ago.

"Or? Look? He Xingchen also felt strange, it stands to reason that he would not make such low-level mistakes when designing software.

"Okay." Su Tong readily agreed. The two of them opened the old files that had been downloaded one by one.

As almost an hour passed, the two men remained in the same position, and the surprise on their faces resurfaced intermittently.

The police officers who passed by He Xingchen's seat cast puzzled glances at Su Tong and He Xingchen, have these two people settled?

"Do you want to inform the boss right away?" He Xingchen swallowed.

"I think it's better to inform the director first." Su Tong said, "We caught a big fish. ”

He Xingchen and Su Tong didn't say a word, printed out all the old materials, and entered the office of the Sun Bureau, and soon, the police officers found that the members of Su Tong's team and their Captain Xu also hurried back.

"Is there a big case?" One of the police officers quietly asked the people around him.

"I don't know, but aren't they looking into the case referred by the second group now?" Another police officer also said he was also confused.

In the office of the Sun Bureau, all the members of Su Tong's team arrived, and after Xu Sa arrived, Sun Bureau solemnly announced: "Su Tong, you will tell the people in your group about the content." ”

Under the gaze of everyone, Su Tong stood up with a folder in his hand: "From the blood analysis report of the deceased Lu Qihua, we obtained the inside information of another case, as well as the way to solve it, as well as the missing emerald. ”

He Xingchen used the computer to retrieve all the relevant similar files, and found that Lu Qihua's blood sample was as similar as 99% to the blood report left by the robbers at the jewelry exhibition displayed by the central government 50 years ago, which proved it.

Fifty years ago, the jewelry robber and the 42-year-old Luk Kai-wah are direct blood relatives. After Su Tong finished speaking, he unexpectedly heard a burst of gasps.

Fifty years ago, even if they were not born in that era, they had heard about it more or less in the police academy, this case was a sensation back then, and it was even used as a subject matter and made into several movies, they were too familiar with it.

"From the investigation report of that year, it can be seen that the jewelry robbers looted a total of one billion yuan worth of jewelry at the exhibition that year." Su Tong's expression was serious.

"The most famous of them, the Mercury Light Sapphire, was exhibited at the Fusubi auction house twenty years ago after it disappeared, and the auction price at that time was 340 million US dollars.