To be honest, everyone really didn't expect the other party to use this trick. Lin Song hurriedly said: "They blocked the gymnasium, indicating that they must have other exits, inform the people around them to guard against it!" ”

"So what do we do now? You can't just stand here and wait. Kim Hee-so said.

Jin Xixiu was talking, and suddenly he heard a series of explosions, and soon, he saw a soldier with a gray face and a lot of blood on his body rushing over: "High captain, all the entrances were blown up just now, and many of our commandos were buried underneath."

Now we have no way to clean up the rubble, most of the people are blocked outside, and there is no way to provide support to those inside. ”

As the soldier spoke, he could hear a faint burst of gunfire from the surrounding underground, and needless to say, everyone could guess that it was a member of the mercenaries underground attacking the commandos trapped underground.

Wu Meng gritted his teeth: "Just use the ground-drilling bomb directly and blow up a hole to come out!" ”

"You see I don't look like Doraemon!" Jin Xixiu said angrily: "Where did we get the ground-drilling bomb, besides, even if there is a ground-drilling bomb, you can't use it indiscriminately now!" What if you hurt your teammates below! And how can we determine the exact location of their underground fortifications! ”

Lin Song looked at the rubble in front of him: "The blueprint of the school, take it!" ”

Jin Xixiu hurriedly handed the blueprint to Lin Song, Lin Song took out a red and blue pencil and quickly drew a few circles on it: "These circles are all inconsistent with the blueprint that we have found so far. After they took over the school, they renovated these places. You see, what do these places have in common? ”

Several comrades-in-arms all gathered around, but after looking at it for a while, they all showed a veiled expression: "This ...... I don't see any difference. ”

Lin Song simply connected these points in pairs, and then marked the midpoint on these connected line segments, and turned to make a vertical line.

Immediately after that, Lin Song drew the second one, followed by the third one, and the fourth one...... Eventually, Kim Hee-so blurted out: "All the vertical lines intersect at the same point, and these transformed positions are on the same circle!" ”

Lin Song nodded: "That's right, all the transformed positions are on the same circle." The same is true of this gymnasium, and the locations of these renovations are all connected to the secret passages that lead to their underground base.

That is, underground, in their base, they were built according to the structure of the ring fortifications. In general, the ring fortifications would place heavy fire in the center of the circle, and in this place, at least there would be vents and even hidden entrances.

They blew up all the other entrances, but the entrance at the center of the circle they didn't dare to blow up, because this is often the main vent of the underground base as well! If you blow up this place, they will all have to suffocate to death underground! ”

While Lin Song was speaking, Wu Meng looked around vigorously, and after looking at it for a long time, he suddenly said, "It seems to be there!" This should be the center of the circle! ”

Everyone hurriedly ran over and found that this was actually a fountain on the campus, and Kim Hee-so said directly: "When we raided just now, we had already cut off the power to the school, why did the fountain still spew water?" ”

The corners of Lin Song's mouth raised slightly, and he said with a cold smile; "Still don't understand? The fountain is just a façade where the electricity that drives the gushing power and the power system on campus are separate from each other. The fountain is gushing, and when the water is circulating, it will drive the air into the ground, this thing is a fountain on the surface, but in fact, this is a part of the fresh air system of the Blood Eagle Mercenary Underground Base! ”

"Then we're going to blow it up!" Wu Meng said directly.

Lin Song grabbed Wu Meng: "Don't be stupid, blow up here?" What a pity to blow up here! Kim Hee-so, find someone to find a way to send a batch of anesthetic gas over as quickly as possible! ”

Jin Xixiu immediately understood: "Count you ruthless, this trick is poisonous enough!" ”

After speaking, Kim Hee-so said a few words directly into the walkie-talkie, and soon someone brought a few gas canisters, Kim Hee-so said: "When we acted before, we didn't plan to use this thing, but we didn't expect it to come in such a big role now." ”

After speaking, Jin Xixiu directly asked people to open the chloroform gas tank, and used a few hoses to aim the gas outlet at the water surface of the fountain, the chloroform gas is invisible, but at this moment, the water surface is rippling, and after the chloroform is poured out, a layer of light and shadow formed on it is rapidly flowing in the direction of the 'drain'.

"That's right, that's their air intake." Lin Song said, "Wait and see." ”

Everyone stood by, quietly looking ahead, silently waiting. After about ten minutes, Lin Song said, "It's almost, stop." ’

Everyone stopped, and Lin Song jumped directly into the fountain, slowly stepped on the bottom of the pool twice with his foot, and nodded at Wu Meng. Wu Meng didn't say a word, and directly carried the ** bag and placed it at the bottom of the pool, and then pulled the plastic pipe fuse out of the water and ignited it directly.

Lin Song and Wu Meng exited the fountain and let everyone disperse. The default explosion time of this ** package is twenty seconds, and when the time of twenty seconds is up, I hear a boom, and I directly see a big hole at the bottom of the pool!

"You stay here, the snow wolf group will follow me!" After Lin Song finished speaking, he took the lead in rushing in with the snow wolf.

After the fountain was blown up, there was stagnant water everywhere, Lin Song put the gas mask on his face, and then took out a pill from his pocket and gave it to the snow wolf to eat.

Although chloroform is an anesthetic, its mechanism of action is actually a slight poisoning phenomenon, and such a pill just makes the snow wolf 'immune' to chloroform.

Snow Wolf and Lin Song explored the way in front, and the teammates in the rear followed behind the hall not far away, Lin Song walked forward along the underground fortifications for a while, and found that there were many mercenaries lying on the ground, these people should have been put down by chloroform just now.

Most of the people were completely unconscious, Lin Song found one who was still open, went up and dragged him: "Say, where is your head!" ”

The person closed his mouth and didn't say anything, Lin Song snorted coldly, and punched the person in the face, knocking the person unconscious completely.