The man in the trench coat hid behind Jiang Ranhydro, who carried a liquid nitrogen tank in his hand. Chen Jiaoyang, Yu Fan, and Guo Na surrounded the two.

Jiang Ranhe was intimidated: "Don't come here, whoever dares to come, I will pour this jar of liquid nitrogen on the water." ”

As we all know, the temperature of liquid nitrogen is minus 196 degrees, and the consequences of sticking anything into a tank of liquid nitrogen are unimaginable! With such a low temperature, the human body can be solidified instantly.

At this moment, the power of the jar of liquid nitrogen in Jiang Ranyan's hand is far greater than a jar of boiling water!

Chen Jiaoyang shouted: "Jiang Ran hydrocarbon! You are crazy? Do you dare to attack the police? ”

Jiang Ranhe didn't care: "Don't think I don't know what you guys do. I've put up with you for a long time. ”

Chen Jieyang: "You're crazy, right?" ”

"Liquid nitrogen? Hehe. There was a contemptuous laugh, it was Yu Fan, Yu Fan had changed his previous calmness, and at this time he actually mocked Jiang Ranhydrocarbon? !

Yu Fan took a step forward and said mysteriously: "I have been in the laboratory for a long time, because of an accident, I fell into a pool of liquid nitrogen, but I survived unexpectedly, since then I am immune to this level of cold of liquid nitrogen, you can't hurt me." ”

Everyone looked at Yu Fan in surprise, what was Yu Fan talking about?

Chen Jieyang's eyes were full of incredulity, and anyone who didn't understand chemistry knew how dangerous liquid nitrogen was. He stopped and looked at Yu Fan, as if to say: "Old Yu, don't be kidding, that is really liquid nitrogen, don't wave!" Dangerous! ”

Jiang Ranhe was also surprised, but immediately yelled more fiercely: "If you don't believe it, just try!" You think I'm kidding? ”

Yu Fan took another step forward, Jiang Ranhe was overwhelmed by Yu Fan's abnormal behavior, and longed to take a step back, but there was a bar behind him, and there was nowhere to retreat.

Yu Fan took another step forward. Chen Xiangyang and Guo Na looked at Yu Fan in horror, if they continue like this, they will really force Jiang Ranhai to be anxious, and they will really pour liquid nitrogen on him. Yu Fan looked very calm, without fear, quite a look of Mount Tai collapsing in front of him and not changing his face.

Guo Na was very worried about Yu Fan's safety, and whispered: "Brother Yu, slow down, don't go over......"

But before the words fell, an accident happened. Without everyone being prepared, Jiang Ran Hydrocarbon exploded, and he poured the liquid nitrogen in the jar towards Yu Fan!!!

That's liquid nitrogen at minus 196 degrees Celsius!! And at such a close distance, it was too late for Yu Fan to hide.

But Yu Fan didn't hide! He didn't even raise his hand to block, he just lowered his head slightly, and wow, a jar of liquid nitrogen was directly ~ splashed ~ to ~ ~ Yu ~ Fan ~ face ~ on!

A cloud of white mist rose up from the entire place where it was touched by liquid nitrogen, as if it had escaped into a fairyland.

Chen Jieyang was frightened and angry in his heart, he couldn't control so much, and his fighting instinct told him that the most important thing at the moment was to solve the source of danger. Chen Frameyang rushed towards Jiang Ranhydro, kicked the liquid nitrogen tank away, and then swept Jiang Ranhydro's head with the other kick, a beautiful second-stage kick.

After all, Jiang Ranhe is also an old person, how can he stand Chen Jieyang's kick, and he directly lost his strength and rolled to the ground. Guo Na and Yu Fan followed closely and held down Jiang Ranhe and handcuffed him.

Wait a minute! Yu Fan? Yu Fan was splashed with a jar of liquid nitrogen at minus 196 degrees, and it seemed that he was okay at all? Chen Frameyang and Guo Na looked at Yu Fan in surprise.

"Brother Yu, you?" Guo Na was a little surprised.

Yu Fan raised his head, glanced around, and shouted, "Old Chen! And one more! Chase! ”

Chen Jieyang reacted, and there was the short man in a trench coat with the surname tall. But just now this jar of liquid nitrogen made the side full of smoke, and he was so short that he didn't even pay attention to his traces. By the time he came to his senses now, he was gone.

Chen Jieyang shouted to himself: "Ma Dan." Pursue! He rushed to the door of the hotel.

When it was time to get off work, there were people coming and going at the door of the hotel, bustling, Chen Jieyang looked around, and he could no longer see the man in the windbreaker in the crowd.

Hey, let him slip away again.

Chen Frameyang ran back to the hotel's tea restaurant to meet Yu Fan Guo Na, Yu Fan saw Chen Frameyang coming back with his head down, so he asked, "Slipped?" ”

Chen Jiaoyang was very annoyed, did not answer, went up and kicked Jiang Ranyan, who was lying on the ground, and scolded: "You are so bold, the police dare to beat you!" After saying that, he kicked again, Yu Fan quickly got up and grabbed Chen Jieyang, and said: "Old Chen, don't get excited, think about it in the long run, and follow the process first." ”

Chen Jianyang was willing to give up, Guo Na contacted the LZ police, and soon the support arrived, and they took Jiang Ranhe back to the LZ Public Security Bureau first.

On the way back, everyone's emotions calmed down. At this time, Chen Xiangyang remembered the strange thing that happened to Yu Fan just now, and he asked curiously: "Old Yu, by the way, just now I saw that Jiang Ran Hydrocarbon pouring liquid nitrogen on you, and you didn't have anything at all?" ”

Yu Fan said calmly: "Yes, there is nothing at all, and even at this moment, I still want to eat two chicken wings." ”

Chen Jieyang was even more strange: "What's going on at this time?" Isn't liquid nitrogen minus 200 degrees? Isn't that liquid nitrogen in it? ”

Yu Fan: "That's true, liquid nitrogen." ”

Chen Jieyang struggled even harder: "We can't stand being splashed with a basin of ice water, how do you resist the temperature of hundreds of degrees below zero?" Is this your stunt again? Special constitution? ”

Yu Fan smiled: "How can there be any special physique." Strictly speaking, splashing ice water is much more powerful than liquid nitrogen. ”

Chen Jieyang's cognition was subverted, he was confused by Yu Fan, and he didn't know what to ask next.

Yu Fan continued: "Because the boiling point of liquid nitrogen is very low, about -196 °C, the body temperature of the human body is roughly 37 °C, and the temperature difference between the two has reached 233 °C, the temperature of the human body is too high for liquid nitrogen, at the moment of contact, the liquid nitrogen will vaporize violently, forming a thin nitrogen film around the body, the skin and liquid nitrogen are separated, due to the poor thermal conductivity of nitrogen, the heat transfer between the body and liquid nitrogen almost stops, so I will not be injured at all." ”

Guo Na reacted suddenly: "Isn't this the Leiden Frost effect?" ”

Leidenfrost's phenomenon was first discovered by the Dutch botanist Hermann Bourhav in 1732, followed by a more in-depth study by Johann Gottrob Leidenfrost in 1756. When the liquid comes into contact with an object far beyond the boiling point of the liquid, the liquid will vaporize quickly and violently, and a layer of vapor will be produced on the surface of the liquid, due to the poor thermal conductivity of the vapor, resulting in the separation of the liquid and the hot object, and the boiling speed of the liquid leaving the hot object is greatly slowed down, resulting in the liquid being able to exist for a long time.

Yu Fan looked at Guo Na approvingly, smiled with satisfaction, and thought to himself that if Guo Na could really follow him all the time, then many things could really help Yu Fan share a lot.