"Look, there's something wrong with the check, right?" Sun An raised the gas mask in his hand and showed it to the mercenary.

The filters on the left and right sides of the mask are different, the one on the right is a complete filter that fits perfectly with the protrusions of the gas mask, and the one on the side is split in two, one of which is the same as the filter on the right, but half the size, and the other is a sealed metal cube with a silver round edge.

Since the metal block is sealed, the air can still only pass through the filter, so it can still filter the air very effectively, but the size is smaller, and the duration of the effect will be reduced a lot, and the duration of this operation will not be too long anyway.

The key is that square, no matter how you look at it, it has nothing to do with gas masks, as a semi-professional who often uses gas masks, the mercenary saw the problem at a glance and frowned: "What is that?"

Sun An carefully took out the metal square, looked at it carefully, and said: " The shell is thin, relatively soft, the material may be solder, so that it is easier to seal, and it is easier to release, the melting point of solder is more than 180 degrees, which is very low for metal, high for biology, the possibility of being a biological weapon is relatively low, it should be a chemical weapon, since it is packed in a gas mask, there are sponges between the front and back, and it cannot be splashed, it will not be something that is in contact with toxicity, that is, a chemical weapon that inhales toxicity, and the range is still very wide, and I can't see what kind of weapon it is, hmm...... This trick is quite poisonous. ”

Chemical weapons are not as toxic as biological weapons, do not have the high contagiousness of biological weapons, the mortality rate is relatively low, there are many effective prevention and treatment measures, not as the first choice of weapons for terrorist attacks, but there is an advantage that the requirements for the environment are low, the stability in complex environments is high, and it can be turned into vapor in a high-temperature environment, which is more terrible than ordinary leaks.

It is relatively simple to make a sealing device with solder, put the chemical warfare agent in it, and then put a heating device in it, after the heat is heated, the solder melts, and the chemical warfare agent inside becomes vapor diffusion, and it is poisoned if you inhale it, and put it in a gas mask, after knowing that the environment is poisonous, people will also choose to wear a gas mask, which will die faster.

"I guess...... Your men guard all the entrances and exits, staircases, and important passageways on the first and second floors. Sun An carefully put the metal cube back into the gas mask, gently put it aside, and asked the mercenary.

Seeing this, the tall mercenary could no longer suppress his impulse, and ripped off the gas mask he was wearing with his right hand on his cheek, thinking that the beautiful, but very scary metal cube had always been on his mouth, and a cold sweat broke out on his back.

The right hand is the hand that holds the gun.

Bai Yue had previously felt remorse for missing a good opportunity to get out of trouble, and when she saw Sun An sitting on the ground slowly and methodically studying and analyzing the gas mask, she guessed that he was playing tricks, and now that the opportunity has come again, how can she miss it.

The left hand of the strangulation was not strangled hard, just to prevent her from escaping, and it did not shrink when she pulled the gas mask, and as soon as she saw that the gun against her head was removed, Bai Yue immediately squatted down and rolled away to the side.

Sun An seemed to have guessed that such a situation would happen, still sitting on the ground, pulling out a pistol pinned to his waist, and shooting a shot into the mercenary's face.

Of course, he is hinting that tear gas has become a habit, and gas masks have become one of the most trusted items of mercenaries, seeing other people's tears and snot, and they have nothing at all, the superiority of the heart can be addictive, and when the most trusted items become full of danger, the strong contrast will make people unable to think calmly, and taking off the gas mask immediately is the most obvious manifestation.

got up and helped Jing Jing on the ground with Bai Yue, and the three of them returned to the office where Chen Yishan and they were hiding.

As soon as he entered the door, a red rose petal fell from Bai Yue's body.

Sun An glanced down, frowned slightly, and began to think about the next action, he didn't have to worry about this problem himself, after becoming a ghost state, the ability of [withering] was lifted by itself, because it was no longer a living thing, there was no concept of death and life, and it was not much different from a stone, that is, the ability to die naturally could not play a role.

But there was still a lot to do, he had to find and kill the orphan who had used the [wither] ability, and beg Bai Yue, he had to go and tell the sick sheep and Liang Chen about the incident of the metal cube, so that they could make some preparations, at least stay away from the gas masks and stay in the open area, and prevent Joel and them from entering the mall so that they would not be killed en masse.

Each of the three things is more urgent than the other, and the most important of them is the third, because as soon as Joel and the others enter the shopping mall, the other party may activate the trap and release the chemical warfare agent, and then the people inside may all die, and the first two things do not need to be worried.

This matter was originally very easy to do, a phone call or a text message could be solved, but unfortunately the mobile phone signal was blocked, there was no way to do so, and the phone in the mall would definitely not be able to get through - the other party had made such a precise plan, it was impossible to miss this point - it was useless to write large letters and paste them on the window, first, it was too late, and second, the shopping center was too big, there were many front doors, back doors, and windows, and Joel They might come in from anywhere and might not be able to see it.

There is no need to think about going out, if they don't know that there is a trap, they will go out through the exit on the first floor, where there are mercenaries guarding, even if they are all killed, their gas masks will still be in that place, and they will be hit when they go out, but now that they know, they can jump out of the windows on the second and third floors, and the outside is very empty, and if they go out, they will not be hit, even if someone breaks their leg, it will only lie in the hospital for a week or two.

Seeing that Sun An was in thought, the six girls were waiting patiently on the side, without making a sound, the backbone came, and someone had an idea of what to do and what to do after that, which was much better than them groping for action.

"Go to the first floor to find Sakura, tell the sick sheep and Liang Chen about the situation I just said, and they will take you to escape by jumping out of the window." After thinking about it for a while, Sun An raised his head and looked at Bai Yue, and then at Jingjing.

Quietly knowing the sick sheep, and Bai Yue can explain the situation clearly, this is enough.

"What about you?" Bai Yue asked curiously when she saw that Sun An seemed to be separating from them.

"I'll go find the guy who touched you first and chop off his hand. Sun An said with a smile, "If you meet him, don't hesitate, kill him immediately, and pay attention to hydration." ”

Bai Yue nodded, judging from the current frequency of petals falling, she could hold on for about ten minutes, then she would be able to find a water source no matter what.

"That's it, there's not much time, if we all die here, we can have a lot of company on Huangquan Road, it's good. Sun An said with a smile and walked out of the office after speaking.

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