It took two hours, after Yu Yang and others emptied this floor, they did not find any armed personnel, but came to the position of an elevator entrance, Yu Yang pressed it gently, the elevator door opened directly, Yu Yang and Wang Hao and others glanced at each other, ready to enter the elevator, at this time there were footsteps behind them.

Yu Yang and the others immediately turned the muzzle of the gun, and facing the passage behind them, a figure in the distance quickly approached Yu Yang and the others, Yu Yang waved his hand lightly, signaling not to shoot.

"Lao Zhao, Lao Zhao, is that you?"

"Yu, it's me, I've run out of ammunition, the position on the first floor can't be defended, and about ten armed elements have rushed in from the outside, as if they want to encircle and suppress us!"

"OK, good job!"

Yu Yang, Wang Hao and others quickly raised their guns to answer Lao Zhao, and a series of footsteps sounded behind Lao Zhao: "Lao Zhao, lie down!" ”

After receiving Yu Yang's order, Lao Zhao didn't say a word, and lay directly on the ground, Yu Yang and the three of them quickly shot, killing one of the guards who were chasing Lao Zhao behind him, and at the same time, Yu Yang took out a magazine from his tactical backpack and threw it to Lao Zhao: "Let's cover you, change the magazine!" ”

Lao Zhao took the magazine over, replaced it with a magazine, and the four of them quickly walked back along the road they came, chasing Lao Zhao There were a total of five people, compared to Yu Yang and others who had just survived the tragic war, these guards stayed here for a long time, and their combat effectiveness was weak, Yu Yang and others did not pay any casualties, and killed all five people.

"Replenish ammunition, Lao Zhao, how is the situation outside?"

"I don't know, I killed a total of four people, two climbed up from the elevator behind me, and some came from outside support......"

"There are two elevators outside, let's go down from those two elevators and take a look, I'll take the lead, John cover!"

As soon as the words fell, the entire corridor suddenly darkened, all the lights were extinguished, Yu Yang and others quickly rushed to the elevator, and found that the elevator power was also cut off, and Yu Yang and others were trapped on this floor, unable to go up or down.

"Damn, now I know that when we turn off the electric switch, are these people going to trap us!"

"What now?"

Yu Yang looked around and took out his tactical flashlight: "This kind of underground building should have a vent, go to the room separately to find it, and after finding the vent, take a look and see if you can climb out of the vent!" ”

"Good!"

In the office, Yu Yang and others flashlighted, constantly looking for the exhaust outlet, easy to find, entering the first office Yu Yang found a small exhaust outlet, but a little, can't get out at all.

"Find a larger office, there should be big vents!"

The three of them kept searching, and finally found a large vent in the office where they heard the screams before, Yu Yang waved his hand, Lao Zhao immediately dragged over a table, smashed the exhaust fan above, and when the light inadvertently swept through the isolation room, Lao Zhao was startled: "I'm Cao, what is this?" ”

"It's the people who are infected with the virus, the whole institute is doing research with living people, and it's against us yellow people, the evidence is already in our hands, and when we get out, we'll publish these things, these damn bastards!"

Lao Zhao patted his chest and pointed to it, after John put a chair away, he slowly climbed up: "Yu, this vent has wind flowing, it should be able to go out, I'll go to the front to explore the way first!" ”

"Let Wang Hao go, Wang Hao lose weight, in case you encounter any narrow places, you can still pass, Lao Zhao, is the signal back to normal now!"

Lao Zhao nodded: "After the power is off, the signal will return to normal, but the signal is a little weak, there may be some deviation here, and the satellite signal can only barely make and receive calls!" ”

"Okay, now I'll send out some of the data, there are some video materials in John's camera, you try!"

Lao Zhao quickly took out the notebook behind him, took Yu Yang's USB flash drive, and frowned after the computer on his face: "There is also a password, I need time to decipher it!" ”

"No problem, Wang Hao said when he found the exit, we are waiting for you here!"

"Good!"

Wang Hao didn't bring anything except a weapon and a few magazines, climbed into the ventilation duct, and then quickly moved forward, and reported the situation to Yu Yang after walking more than ten meters away.

"Fifteen meters ahead, there is a corner, and the width of the passage does not change!"

"After turning around, about a hundred meters ahead, there is an upward passage, about five meters high, Yu, I'm trying to climb up now, wait a minute!"

Information continued to flow into Yu Yang's mind, and Yu Yang kept drawing sketches on a piece of paper at the same time, indicating the general appearance of the route that would be advanced.

"Whew, climb up, it should be to the upper floor, there is no light below, it should be that the power supply of the entire research institute has been cut off, I will continue to move forward!"

Wang Hao's side is basically unimpeded along the way, and the ventilation pipes of this kind of underground buildings are generally very wide to prevent blockages and other problems, but the only thing that makes Yu Yang a little worried is that if the exits of these passages are blocked, Yu Yang and the others may be trapped here.

"Lao Zhao, how are you doing here?"

"The USB flash drive has been deciphered and is preparing to be uploaded, where are you going to send it?"

Yu Yang thought for a while: "Pass it to my mailbox!" ”

Originally, Yu Yang wanted to upload it to the Internet, but he was worried about causing panic, so he finally decided to send it to his mailbox, and after he returned, he sorted out the information and sent it out in batches.

Lao Zhao nodded, Yu Yang entered his mailbox and began to upload, the speed of compressing the file at the beginning was very fast, but when the data began to be sent, it became very slow, and one percent of this data was like a turtle crawling, moving little by little.

"Wang Hao, have you found the exit over there?"

"It feels like it's getting fast, I feel like the wind is getting a little stronger, and the exit should be not far away!"

"That's okay, John, you go, Lao Zhao, in the middle of you, my palace!"

Lao Zhao closed the notebook, and had already set up the mode of not interrupting the network after it was closed, so the notebook was still transmitting information, and after sorting out the weapons and ammunition, John was the first to climb in, and Yu Yang was the best.

Compared with Wang Hao's light travel, Yu Yang and the others are a little more troublesome, and they should pay attention to the weapons and backpacks on their bodies, so as not to become stupid thieves in the movie and get stuck in the ventilation pipe.

ps: It's impossible to gamble in this life, and the wind on the rooftop is really strong!