During the investigation last night, Liu Qingshan not only compared the button photos online.

I even specially found some experts who have a collection hobby in this area for advice.

“This button is quite special.”

The projection is a photo of this button.

"This black background is inlaid with gold edges, and the material is very special."

"First of all, the gold edge of this button is gilded."

"The black bottom is not ordinary plastic, but a kind of animal's teeth are hand-polished."

With Liu Qingshan's introduction, the projected photos on the screen gradually enlarged.

Everyone watched carefully.

"We analyzed the teeth of this animal overnight last night."

"It's basically the posterior molar of the dovetail kangaroo."

"This animal is not distributed in China and import and breeding is prohibited."

"But we didn't track down the makers of such buttons."

"So based on this information, it is estimated that the button we found in the cemetery should be specially customized and not circulated on the market."

This case analysis will end.

The black background and gold-edged buttons found in the grave are a major clue to solving the case.

The deceased put the buttons in his mouth, which is likely to be an important evidence to guide the police to find the murderer.

However, Liu Qingshan's investigation did not find the source of the button.

Custom buttons…

Who exactly customizes buttons?

After Chen Yan and Shen Yunyi got married, they also came into contact with some so-called circles of rich people, or those of upper class people.

But, it's actually that's the case.

All I eat is oil, salt, sauce, vinegar and tea.

But I usually drive better cars and live in larger houses.

Clothes are more expensive.

And many people like to wear customized clothes.

For example, when Chen Yan and Shen Yunyi got married, their wedding dresses and dresses were customized.

Being rich means living a more luxurious life.

But, specially customized buttons...

To be honest, Chen Yan has never heard of it.

Rich people in China don’t pay attention to this.

In the office, Chen Yan paced back and forth, thinking seriously.

Such a key clue as buttons cannot be interrupted.

It is still necessary to find clues from the people Alisa usually comes into contact with.

Four years ago, Alisa proposed to resign from Midonglin Restaurant on July 16, and then booked the next day on the day of her resignation, that is, on July 17, a flight ticket from Liancheng to Beautiful Country.

Why did Alissa resign? And she was so anxious to return to the beautiful country?

Where did Alisa go on the night of the 16th?

On the desktop is Alissa, several phone numbers she called on the evening of July 16.

The first phone number was issued at 9:28 am on July 16th.

The number is 888, and its owner is a lawyer at Liancheng Sky Law Firm.

The call time is very short, only less than a minute.

Afterwards, at 9:34, Alisa answered a call.

The owner of the phone number is Liu Yongting.

It was one of the three people who made the most calls during Alisa during her stay in Liancheng.

This time the call time was relatively long, and the recorded call time was four minutes and thirty-six seconds.

The second call was made at 2:19 pm.

The last number of this phone number is also very good, it is 345, and the owner of the number is the owner of a car rental store.

At 2:28, Alisa made another call.

The last number this time is usually 1212, and the owner of the number is a doctor in the First Hospital.

After that, until 9:28 pm.

Alisa answered the last call.

The owner of the phone is Wang Haitao, and he is also one of the three people who have contacted Alisa the most.

This is very strange.

A lawyer, a car rental shop owner, and a doctor.

They are three men in three unrelated industries.

How did Alissa know these three people?

Zhang Chaoyang investigated Alissa's text message records using her phone number.

It's strange that in ten months, Alisa's mobile phone number has never received text messages.

It seems that it is necessary to investigate in depth from these people.

"Chaoyang," Chen Yan picked up the phone and dialed Zhang Chaoyang's cell phone: "How is the contact person in Alisa's mobile phone number investigating?"

"I've already had some clues."

"We have contacted Zhang Kaiyue, Wang Haitao and the other two, and are now plagiarizing the first detective team in another half an hour, but only Liu Yongting has not found it yet."

"How did Alissa check on the three people who called on July 16?"

“There has been progressing.”

"The lawyer from Sky Law Firm was hit into a vegetative person in a car accident two years ago."

"The owner of the car rental store and the doctor from the First Hospital have been found and are on the way here."

Half an hour later, Chen Yan met Zhang Kaiyue and Wang Haitao.

Wang Gang and Zhao Bing are in charge of the interrogation, while Chen Yan is watching the interrogation process in the surveillance room.

"Four years ago, Alissa..."

Zhang Kaiyue seems to have little memory of the name Alisa.

Wang Gang pushed the photo in front of Zhang Kaiyue: "Don't you remember it very clearly?"

"Four years ago, an intern chef who worked at Midonglin Restaurant in Liancheng, was a Chinese from a beautiful country."

"Do you have an impression now?"

"Damn it! Are you talking about the great white shark?"

"Um?"

Zhang Kaiyue realized that what he said was a bit too much: "Comrade police officers are embarrassed, sorry, I didn't mean it."

"It's just that I forgot it after a while. After all, it's been more than four years. When you talk about Midonglin Restaurant, I remembered this person."

"What's going on with the great white shark you're talking about?"

"This great white shark is Alisa's nickname."

"Because she is very capable of drinking and her skin is very white, we gave this nickname."

"Tell me how you met."

"It was about five years ago," Zhang Kaiyue frowned and obviously recalled.

"I worked in an alien bar at that time and was the foreman there."

Alien bar?

"It was very popular a few years ago, that bar on Satellite Road?"

Wang Gang knew the name of this bar.

In the jurisdiction of the second team, I had conducted several temporary inspections.

"Yes, yes, it's that alien bar. It was known as the best in the city back then, so you have to queue up to order a table."
To be continued...