Chapter 521: Forcibly break in!

　　 There is less than two minutes before the next steam pipe switch.
　　 Now there are two choices in front of Qi Lin: one is to immediately turn around and run out of the inspection opening before the steam has switched channels.
　　Second, he bit his scalp and continued to run deep into the pipeline, but in case the second inspection port was still not found, once the steam channel was switched, Qi Lin would not have enough time to exit the heat dissipation pipeline from the original road.
　　 This is a gamble, and the bet is Qi Lin's own life.
　　 After thinking for two seconds, Qi Lin made a choice.
　　 is not the first choice, nor the second, but a "compromise solution" between the two choices.
The time for the steam to switch pipes is three minutes, which is 180 seconds. Qi Lin is now at this position, and the inspection hole he comes in is five hundred meters away. This five hundred meters distance took him less than 70 seconds. Time, except for the 70 seconds that went back, Qi Lin still had 40 seconds left.
He immediately decided to run forward for another 20 seconds. If the second inspection opening is not found within this distance, he immediately turned around and ran back. In this way, he could be inspected from the first one before the hot steam swallowed him. Leave the heat dissipation pipe.
　　 "19 seconds."
　　 Qi Lin silently began to count down for himself, and at the same time he pushed the soles of his feet and rushed forward.
　　 Due to the large amount of steam condensed into water droplets, the inner wall of the heat dissipation pipe is very slippery, and the oxygen content in the air is almost negligible. It is these two factors that have greatly slowed Qi Lin's sprint speed. Otherwise, at the level of a second-level evolutionary, at a distance of 500 meters, running on flat ground can definitely run within 50 seconds.
　　 "14 seconds."
The inside of the heat dissipation pipe is dark. It is impossible to have lighting facilities in this high temperature and high pressure environment. Embedding circuits and light sources inside the heat dissipation pipe can easily cause the pressure on the inner wall of the pipe to be imbalanced and cause a leakage accident, even if a technician enters For routine maintenance in the heat dissipation pipe, you must also bring your own light source.
　　 Fortunately, Qi Lin's dark vision ability once again played its role.
　　 "9 seconds."
　　The thick soles of the boots are constantly stepping on the inner wall of the drenching pipe. Before, the entire pipe was still slanting downwards, but now it has become completely horizontal.
　　 "7 seconds, 6 seconds...Exit!"
　　 Just as Qi Lin was about to turn around, something similar to an inspection door appeared in his field of vision twenty meters away.
　　 It was a circular valve. Qi Lin hurriedly ran to the valve in three steps and two steps.
The folding handle of the valve was hidden in the hidden compartment. Qi Lin opened the hidden compartment and pulled the handle out. At this time, he suddenly noticed that this valve was a little different from the previous inspection port. It was on the handle. There are two exquisite pressure gauges, with a metal inscription beside the pressure gauge-"Note: Please make sure that the pressure on both sides is the same before opening the valve."
　　 "The pressure is the same?" Qi Lin was taken aback for a moment, and looked at the indications on the two pressure gauges. Although they were not exactly the same, the difference in numbers was almost in a negligible category.
There is no such pressure gauge inside the first access port. After all, if the technician is in the heat dissipation pipe, the cooling system of the entire basalt shell must be in a suspended state. Since there is no steam passing through, neither the inside nor outside of the pipe Any pressure difference will occur.
Although there is a hint of doubt, Qi Lin has not much time now. He was about to turn the handle of the valve counterclockwise, and accompanied by a toothless rubbing sound, Qi Lin pushed forward and opened it. This round valve.
　　On the other side of the valve, there is still a pipe, but compared to the main heat dissipation pipe, the diameter of this branch pipe is much smaller. With Qi Lin's height, he must lower his head to pass through it.
　　 But what Qi Lin noticed is that the inner wall of this pipe is dry, that is to say, this pipe has not passed through steam for a period of time, it is probably a spare heat pipe!
Qi Lin immediately got into this pipe shortly, closed the valve behind him again, then took out a spare coat from his backpack, wrapped the sleeves of the coat around his waist, and put the whole coat on his buttocks. the following.
　　 The inclination of this pipe is very large, and the inner wall of the pipe is very smooth. As long as Qi Lin sits on the ground, he can slide directly to the bottom of the pipe like a slide.
　　 took a deep breath, Qi Lin put his hands on the inner walls of the pipes on both sides, and he quickly slid into the depths of the pipes.
　　……
However, Qi Lin did not consider the problem that the inner wall of the pipe is too smooth. It is impossible to "brake" against the inner wall of the pipe by pressing the limbs against the inner wall of the pipe. It is easy to lose balance. Fortunately, Qi slides down. Lin saw several inspection openings on the side of the pipeline. He didn't bother to brake at all. He just slipped to the end. Anyway, there seemed to be an inspection opening every ten meters on this pipeline.
　　 Fifteen seconds later.
　　 "咚!!!"
　　 Qi Lin’s hit the bottom of the pipe heavily, and fortunately, there was a layer of clothing underneath his ass. Otherwise, I’m afraid he would really be thrown into bloom.
　　 is a layer of fine and strong metal mesh. Through the mesh smaller than the fingernail, Qi Lin can only see that on the other side of the metal mesh, there is still an identical pipe.
　　 Fortunately, the inspection opening closest to Qi Lin is less than one meter above the metal mesh, and Qi Lin can reach it as soon as he reaches out.
　　 took out a piece of iron wire, Qi Lin easily pried open the manhole and got out of the pipe.
This is an open and bright computer room. A lot of equipment that Qi Lin doesn't recognize occupies the space on both sides of the pipe, making a "buzzing" buzzing sound. The pipe's inspection port is just connected to the corridor that is vacant in the middle of the equipment. , Go straight to the exit at the end of the computer room.
　　 And two people wearing nuclear radiation protection suits and holding tablet computers in their hands are standing in the corridor checking the equipment in the computer room.
　　 The sound of Qi Lin drilling out of the pipe shocked the two of them~EbookFREE.me~ They turned their heads.
　　Six eyes faced each other, and there seemed to be a momentary stagnation in the air, and the next second, Qi Lin immediately rushed towards the two!
　　 The reaction of these two people is not slow, the one on the left stretched his hand to the holster around his waist, and the one on the right grabbed the walkie-talkie hanging from his shoulders
　　At this time, Qi Lin had rushed in front of the two of them, took a kick, kicked the person wearing the walkie-talkie to the ground, threw a dagger in his hand, and threw it at the person who drew the gun!
　　This kind of nuclear radiation protective clothing has several layers of metal mesh in the rubber shell. It can also be used as a stab-resistant clothing, but Qi Lin’s dagger is aimed at the person’s facade
　　The mask of the protective suit has only a layer of hardened resin, which is not too thick. The dagger directly penetrated the mask and pierced the person's face.
"what!"
The man fell down immediately, but just before he fell to the ground, the pistol in his mouth still squeezed the trigger. Although Qi Lin did not hit Qi Lin, the sound of a gunshot resounded through the entire computer room. .
　　 "Damn it!"
　　 Qi Lin cursed secretly, and quickly twisted the necks of the two who fell on the ground, and at the same time, the harsh siren finally sounded in the entire Xuanwu shell. ...
　　
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