Coroner Coroner

"any solution?"

Hui Yuanai was a little curious:

"Could it be that you want to use the flame reaction to quickly confirm the presence of sodium salt in the water droplets?"

"No, it's not that easy..."

She tried to come up with a method, but then shook her head and denied herself:

"The flame reaction test of sodium ions is cumbersome to operate."

"The flame color of sodium is yellow, which is easy to coincide with the color of the flame itself, making it difficult to distinguish."

"It is necessary to use a pure, pollution-free, blue-flame alcohol lamp with a clean wick to ensure the accuracy of the test results."

"If you have the time to go to the laboratory, it's better to extract the 'water droplets' directly, and use professional methods to test and determine the composition."

"What's more, the sodium chloride content in the tears is not high. It's hard to say whether there will be a change in the flame color visible to the naked eye if a few tears are used for the test."

Saying that, Haibara Ai looked at Conan delicately.

It seemed to be urging him to quickly lick it with his tongue.

"Never!"

Conan replied with a tingly scalp:

"The method I'm talking about is not the flame reaction."

"Actually, the method is very simple, just a little reasoning, plus the knowledge of trace analysis."

"First of all, suppose that Mr. Zhang Tian was not crying to answer the phone, but stood there preparing to commit suicide after washing his hands."

"Then the experiment we did before proved that he had to remain still in that position for more than 2 minutes before forming those few drops of water."

"And for such a long time, under normal circumstances, our hands will maintain a more effortless natural hanging posture."

"Instead of straining to raise your hand and hold it still for 2 minutes—"

"Even if you hold your hand all the time, the water droplets will not fall directly from the hand, but will slide down the arm, making it difficult to fall to the ground."

"Since this is the case, there will be a significant gap between the 'height' of water dripping from the hands and the 'height' of tears dripping from the cheeks."

Keep your hands in a natural hanging posture, about 1 meter off the ground.

And if Mr. Zhang Tian maintains a standing posture, the position of his cheeks and chin is about 1 meters from the ground.

The two are far apart.

"Comparing the knowledge of blood trace analysis to water droplets, you can know:"

"Dropping water droplets formed by the same amount of liquid, the height increases, the larger the diameter of the water droplet, the more protrusions."

"There is a good linear relationship between the size of the falling water droplet and the height of the drop."

"In this way, we can roughly guess from what height those water droplets fell through simulation experiments."

Conan gave such a way.

He said firmly and confidently:

"We can do experiments now to see if those 'droplets' are dripping from the hands or the face."

"If it's the latter, then those water droplets are likely to be tears."

A moment of silence.

Only Hui Yuanai said quietly.

"What if Mr. Zhang Tian had washed his face at that time?"

"Easier to lick with your tongue..."

"And it can't go wrong."

Conan: "..."

..............................

Soon after.

According to a quick and accurate verification, Conan finally confirmed that those few drops of "water" were tears.

"Googoogoogoo... Bah!!"

Conan spat out the mouthwash fiercely, and firmly gave the final conclusion:

"That's right...it's salty."

"And it's not likely to be sweat - every room in the theater is air-conditioned, so it's not so hot that you sweat so much that you drip onto the floor."

"So we can confirm that Mr. Zhang Tian was crying at that time."

"Get in touch with his weird lies in the content of the text message."

"It's not hard to imagine that he was charging his phone in the lounge and crying alone while hiding."

"Later, Mr. Zhang Tian's daughter suddenly called him."

"He answered the call while letting the phone continue to charge, but he didn't dare to make a sound."

"Then he hung up the phone, wept secretly, pretended to be in a normal mood, and texted with his daughter."

"During this process, Mr. Zhang Tian's tears fell to the ground."

"He most likely wiped his tears with his hands, so that his palms were also stained with water-this greatly increased his risk of electric shock."

"So when he was about to unplug the charging plug after sending the text message, he was electrocuted."

Conan paused for a moment, and his tone became deep:

"After recovering from the electrocution, he then went back to the screening room to watch movies."

"I was a little surprised at first, since he was feeling uncomfortable after the electric shock, why didn't he just sit in the lounge and rest, but went back to the screening hall."

"Now that I read those text messages, I know..."

"Perhaps, Mr. Zhang Tian, ​​did you really want to rush to see Gomera?"

Mr. Zhang Tian mentioned in the text message that he would go back to talk to his daughter about the plot of "Gomera" at night.

During the conversation, he was still in front of his daughter, showing interest in the "Gomera" series.

But in fact…

"With his age, identity and experience, I'm afraid he won't like to watch this kind of special drama, right?"

"He rushed back to the theater to watch the movie, maybe just because he knows now that his daughter also likes to watch Gomera."

"So, he wants to finish the movie and fulfill his promise of 'going back to chat with his daughter about the plot at night'."

Conan made a conclusion with emotion.

And in everyone's mind, such a picture could not help but emerge.

Mr. Zhang Tian broke free from the electric shock.

He staggered up and leaned against the wall for a while.

Because of the damage to the cranial nerves caused by the electric current, as well as the lack of oxygen in the brain caused by the dysfunction of the heart, his brain has begun to feel a little dizzy.

He splashed cold water on his head to wake him up, and then thought of the promise he had made to his daughter in the text message.

So, instead of sitting and resting in place, he leaned on the wall, bent over, and slowly moved back to the screening room.

By this time, his consciousness had been completely blurred.

In the end, he watched the movie his daughter liked to watch, and died suddenly in a daze.

"Nice story."

"but…"

Hui Yuanai was silent for a while, and asked:

"Is there another possibility: "

"It was Mr. Zhang Tian who planned to commit suicide, but before committing suicide, he wept in grief."

"And while he was crying, he suddenly received a call from his daughter."

"He didn't tell his daughter the truth, because he couldn't bear to let her know that he was going to die."

"Secondly, leaving such a text message and making a 'promise to go back to accompany his daughter at night' can also make his electrocution look more like an accident than a suicide."

"This..." Conan was speechless for a moment:

In fact, he can think of it too.

According to the conjecture put forward by Hui Yuanai, it can also be fully explained.

but…

"But I still don't want to believe it."

"As a father, would he really lie to his daughter and make false promises?"

"He said he was going home, but he only sent back a body."

"It's too cruel to do this..."

Conan sighed deeply, looking a little depressed.

After all, he still failed to find strong enough evidence.

Perhaps his reasoning was useless.

"No, Conan, you're doing fine."

Lin Xinyi shook his head and said approvingly:

"What you restored was the last moment before Mr. Zhang Tian's accident."

"At least you know, he's crying, he made a promise to his daughter to go home."

As a forensic doctor, while completing criminal investigation work, he will also unconsciously do some "useless reasoning".

He will imagine the details of the deceased's experience during his lifetime, imagine the environment, sounds, gestures, and movements at that moment.