Major Crimes Unit Starts with Police Academy Students

Moreover, based on all the surveillance footage, it was virtually impossible for him to hide the diamond midway through the journey.

Upon hearing this, Zhao Jiwei immediately felt a headache coming on.

"So whose advice should we listen to?"

Seeing this, the others also started discussing it amongst themselves with the people nearby.

Only Wu Mingcheng sat silently in his seat, imagining the whole process in his mind.

He realized he had reached a mental dead end, completely clueless. He went through the two men's statements again.

Wang Shi said the diamonds were in the safe, but the driver said he didn't see them when he opened the safe.

This means that one of them is lying. But what if neither of them is lying?

At that moment, he suddenly remembered the large hole in the safe and the powder he had collected inside it.

At that moment, something seemed to come to mind: an oxygen cutter? High temperature? Melting point? Ignition point?

Thinking of this, he quickly turned on the computer in front of him to search for information about diamonds.

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Diamond, commonly known as "diamond," is a mineral composed of carbon. It is an allotrope of carbon and a particle-like substance composed of a single element in nature.

It is the hardest naturally occurring substance found on Earth, and diamonds can also be found in meteorites that have fallen from the sky.

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Therefore, diamond is extremely hard, with a melting point between 3550 and 4000 degrees Celsius. Its ignition point in pure oxygen is 720 to 800 degrees Celsius, and in air it is 850 to 1000 degrees Celsius. Furthermore, it is non-conductive.

Finally, Wu Mingcheng found the most crucial part, the answer he was looking for: diamond's ignition point in air is 850 degrees Celsius.

This explains why the driver didn't find any diamonds when he opened the safe.

That's because the high temperatures created when the driver used an oxygen cutter to cut the safe caused the diamonds to burn in the air.

Now all the problems could be explained, and his furrowed brows relaxed.

Wang Shouyi then noticed that the people present hadn't reached any conclusion in their discussion.

Having no other option, he had to transfer the case to the Municipal Public Security Bureau's Criminal Investigation Division.

Fortunately, Chief Yan of the Criminal Investigation Detachment is considered an old colleague of his, and the two have a good relationship. The Criminal Investigation Detachment should be willing to take on the case.

At this moment, he noticed Wu Mingcheng, who was standing silently at the back of the crowd, staring intently at the computer screen.

He thought to himself, "Logically, this shouldn't be the case. Wu Mingcheng is usually the most opinionated."

He said tentatively,

"Mingcheng, you haven't said a word. What's your opinion? Come and share your thoughts with everyone."

Upon hearing Wang Shouyi call his name, Wu Mingcheng stood up and said,

"Director, I do have a slightly different opinion,"

Everyone present looked at Wu Mingcheng with curious eyes when he stood up.

After all, everyone has witnessed Wu Mingcheng's abilities, and they all want to see what different ideas he has.

Then, Wu Mingcheng slowly began to speak.

"Actually, we've all fallen into a deep misconception."

That is, we all believe that one of them must be lying.

Wu Mingcheng's words successfully confused everyone. Xia Jie asked in bewilderment,

"Mingcheng, isn't that right?"

Wu Mingcheng smiled slightly at this moment, and then said,

"We can change our perspective: what if what they both say is true?"

Upon hearing Wu Mingcheng's words, Cao Jianjun immediately stepped forward and spoke up.

"Isn't this a contradiction? How could both of them be telling the truth? These are clearly two completely opposite situations,"

The police officers nearby all began to discuss it in hushed tones.

"Yes, how can we equate these two situations?"

"Indeed, that's impossible."

5.6 "I thought he might have some different ideas?"

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Everyone felt a pang of disappointment; it seemed even Wu Mingcheng, who had repeatedly performed extraordinary feats, had no constructive ideas.

At this moment, Cheng Hao noticed that Wu Mingcheng's expression did not change despite the people's doubts; his demeanor remained as calm as ever.

So he began to speak.

"Alright, let's all listen to Mingcheng continue."

Cheng Hao was considered the second-in-command of the institute, so he naturally held considerable authority among these people.

Hearing his words, everyone quieted down and listened to Wu Mingcheng continue his analysis.

Chapter 374 High Temperature Ignition Point

Wu Mingcheng continued at this point,

"If we consider this line of thought, then there are two possibilities,"

The first possibility is that someone stole the diamond first; the second possibility is that the diamond simply disappeared on its own.

Obviously, the first possibility has been ruled out, so only the second possibility remains.

At this point, the people present were even more confused. The diamond disappeared on its own?

That's even more impossible, okay? Did the diamond grow legs and run away on its own?

Yang Shu said, puzzled.

"Mingcheng, we don't quite understand what you mean. What do you mean by the diamond disappearing on its own?"

At this moment, Wu Mingcheng revealed a mysterious and inscrutable expression.

Wang Shouyi was also very confused, and said aloud,

"Alright, Mingcheng, stop keeping us in suspense and reveal the mystery to everyone,"

Wu Mingcheng then spoke to Li Dawei, who was 16 years old.

"Dawei, where is the bag of powder I gave you when I was at the scene?"

Li Dawei quickly took a small, transparent plastic bag out of his bag and handed it to Wu Mingcheng.

"Here you are,"

After taking the plastic bag, Wu Mingcheng raised his hand and showed it to everyone.

Cheng Hao then asked curiously,

"Isn't this the powder you collected in the safe? What does it have to do with diamonds?"

Wu Mingcheng then said with a smile,

"If I'm not mistaken, this powder is from that sixty-carat diamond,"

Upon hearing Wu Mingcheng's words, everyone was immediately shocked.

"What? This is a diamond?"

"How did the diamond turn into powder?"

"How is that possible? Diamonds are the hardest metal,"

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Li Dawei then raised the question that everyone had been asking, saying with some disbelief,

"Mingcheng, diamonds are the hardest known substance. How could they possibly turn into powder?"

Upon hearing Li Dawei's words, Wu Mingcheng chuckled.

"You're not bad, kid. You do know a little common sense, but what you might not know is that diamonds ignite at 850 degrees Celsius in air,"

Upon hearing this, the first person present to react was Deputy Director Gao Chao.

The climax was like a sudden awakening; everything became clear in an instant.

"Oh, I see, so that's how it is,"

As soon as he finished speaking, everyone turned their attention to Gao Chao, who was standing next to Wang Shouyi.

"Director Gao, what have you figured out?"

"Yes, please explain it to everyone, why don't we understand?"

"My head is about to explode, I just can't figure it out!"

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At this moment, Gao Chao said with a smile,