"Yes, that's why they brought me here, it's only early autumn, the weather of the autumn tiger, and the temperature in the morning is more than 20 degrees, where can he stay and freeze like this? I just borrowed the forensic tool of their Chengxi Branch to measure it, what do you guess the liver temperature of the deceased is?"

"How much?"

"-41 degrees Celsius, and it is the result of being left at room temperature for nearly an hour. ”

"How is this possible? Not to mention us, even the North Pole wouldn't be so cold, would it?"

"So, the local police thought it was too bizarre, so they brought us here. ”

Du Lin looked up along Wang Honggui's raised hand, there was also a piece of rope attached to the brass handcuffs, and the other end of the rope was a large white sheet, which looked like a white tablecloth, Du Lin pulled it with his hand, the elasticity was very good, it should be a latex product.

Durin unfolded the piece, the part of the rope tied to it had an inflatable opening, and the rest of it was in the shape of a trumpet. "It's a broken big balloon, isn't it?" asked Gu Quan.

"It should be, but how big is this balloon if it is not broken?" Gu Quan came over and compared it with his hand, "If there is no defect, I am afraid that this balloon will be more than two meters in diameter!"

"Sounding balloons!" said Durin, "I've heard that the meteorological department and some scientific research institutes will release some huge sounding balloons into the sky for scientific research, is that what it is?"

Gu Quan said: "Very likely, then this person's body temperature is so low to explain, the sounding balloon can generally fly to an altitude of 30,000 meters, according to the principle that the higher the altitude, the lower the temperature, when it reaches that altitude, the temperature can be as low as minus fifty or sixty degrees, and the balloon can stay at high altitude for a day or two, until the latex becomes brittle under the long-term action of low temperature, and it will break and fall back to the ground."

Every year, we get a lot of reports that we see 'UFOs', but when we investigated, most of them were witnesses who thought the sounding balloon was a 'UFO', but I always saw it in photos, and it was the first time I saw it.

If he had been taken to the sky by this balloon and then fell, then he was lucky enough to have landed in the lake, or he might have fallen to pieces. ”

"Then there's nothing strange about it, like those false positives 'UFOs', you came for nothing. Durin smiled at Gu Quan.

"It seems that this is the case, that's okay, I won't disturb your work, I'll withdraw, and we'll talk again when we have a chance. Gu Quan took out a walkie-talkie from his waist, "Come and pick me up, it's over, false alarm!"

In a moment, a helicopter rose from behind the reeds by the lake, flew over Gu Quan, and threw down a rope ladder, a huge whirlwind that blew several policemen around him to the ground, while Durin did not move.

Gu Quan secretly said in his heart, the people who can cooperate with the Spirit Association really have two tricks, and this kung fu is not something that ordinary people can practice.

"Expert Du, goodbye!" Gu Quan shook hands with Du Lin, grabbed the rope ladder, and the helicopter turned a corner and flew away.

"I'm C, what's the situation, why did you still dispatch the helicopter?" Li Xian finally belated.

"It's okay, Wang Honggui's death is too strange, and someone from a special department came to investigate the cause of death. Dohrin said.

"Oh," Li Xian nodded, he had also heard of this special department, and knew that the water in it was very deep, so he didn't ask much, "What is the cause of death?"

"Frozen to death. ”

"Frozen to death?" Li Xian was very surprised, "What kind of weather? Can you freeze to death?"

Du Lin told Li Xian about his and Gu Quan's speculation just now.

"Oh, that's pretty much it. Li Xian glanced at the corpse, and his eyes suddenly lit up, "This is ......"

He grabbed the brass handcuffs on Wang Honggui's wrists,

"Isn't this the police handcuff that our police used in the early days? I was eliminated when I first joined the work, this is a real antique, the last time I saw this thing, it was in the museum of our police academy, I didn't expect to see it again today. ”

Dohrin said, "You're saying this thing is a real police handcuff, not a replica?"

"Definitely not, look here," Li Xian pointed to the keyhole of the handcuffs and said, "There is a three-digit code under this keyhole, and there is also a corresponding code on the key of the handcuffs. ”

"How many handcuffs are there in the same coded batch?"

"That's a sea of people, why can't there be thousands of pairs? And it's been a long time ago, this thing has long become a collector's item, and there are not a few people circulating in the collection market, and it's impossible for you to check the source of this handcuff through the code. Li Xian immediately understood what Du Lin wanted to do.

"That's not going to be easy. Durin sighed.

Now, the case is at an impasse.

The morning before yesterday, he and Li Xian had just basically determined Wang Honggui's suspicion of committing the crime, and before that, that is, the morning before yesterday, Wang Honggui had escaped from the police under the command of others, and it was very likely that he was locked in a sounding balloon and released into the air to freeze to death.

Who was this man who directed Wang Honggui to escape? Why did he kill Wang Honggui? And why did this person kill people in such a troublesome way?

Durin's eyes suddenly lit up, and he grabbed the wreckage of the sounding balloon.

"I know how Wang Honggui handles the fishing line!"

Li Xian is not stupid, he also reacted immediately, "Wang Honggui prepared a hydrogen balloon in advance and put it downstairs, after he pulled the fishing line and threw Deng Ting downstairs, he immediately tore off the rubber band, and then tied the fishing line to the hydrogen balloon and released it, so as to deal with the fishing line, even if the hydrogen balloon exploded after flying into the air, the fishing line would have been taken to a far place, no one would associate such a fishing line with this case, this Wang Honggui is a talent!"

Du Lin said: "Wang Honggui is very smart, but the person who killed Wang Honggui is even smarter, he deduced Wang Honggui's killing methods earlier than us, and also used this similar killing method to kill Wang Honggui, and also reminded the police, so that the police can figure out how to deal with the fishing line, this person is not only a talent, but also a genius." ”

Li Xian scratched his head, "The key is that Wang Honggui is dead, even if Deng Ting's case can be concluded, it will not be completely concluded, and now there is another case, Wang Honggui can't die in vain, and the person who killed him must also be found." ”

Du Lin thought for a moment, "Lao Li, don't you think this person's methods are a bit familiar?"