The three entrances to the underground base found at the same time were not so much discovered, but rather the people below took the initiative to open them, and a group of people who were not like people, ghosts and ghosts rushed out of the underground base, and these people were all transformed, just like the dragon tooth leopard that Xiao Ming discovered at the beginning, the whole body was integrated with photon elements, and one by one was infinitely powerful and crazy.

In the face of the strafing of the machine, he rushed forward without caring at all.

Such a brainless charge, the effect is naturally not good, row after row of reformed people fell, but before the troops behind had time to breathe a sigh of relief, the alarm sounded heartbreakingly, and the red alarm red light only represented one thing.

The mechanical virus spread into the air.

These transformers with mechanical viruses have long been prepared in their hearts, but the mechanical virus can suddenly spread into the air, which makes them a little surprised, but fortunately, the gas mask itself is the most basic equipment, and all the people who come to Tianxiang City are the main forces of the four major forces, well-equipped, and at the same time as seeing the red alarm, one by one the bubble-like photon gas masks covered their entire heads.

Obviously, the quick reaction of the members of the main force was completely correct, and those who acted with the troops did not have such equipment, although some clever people saw that the troops were covered with gas hoods and covered their mouths and noses, but the mechanical virus could be blocked in this way.

It was only a few breaths, and these civilians convulsed one by one, their faces turned purple, that is, they blinked seven or eight times, and these civilians who fell and convulsed all stood up again, salivating at the corners of their mouths, their eyes were congested and swollen, and their throats let out a beast-like roar.

> They're infected, kill them!" "The members of the main force are indeed mental, and they are already prepared when these civilians have abnormal reactions, but fortunately, there are not many civilians who come out with the troops, and they have just become infected, and they have been killed before they have time to spread the damage.

& Chief, I received an order from the upper peak to retreat, the virus has spread in the city, and we must go back immediately to quell the chaos. Here, the upper peak asks us to blow it up!" the correspondent yelled at the leader. Now the scene is chaotic, and the roars of those reformers who rushed up from the underground base completely drown out the sound of gunfire, and even if there are communicators between them, the other party who doesn't need to roar can't hear what is being said.

& Get down to the two teams, and everyone else will withdraw and move the black water over!" the team leader said in a deep voice.

Black water is the name of a liquid bomb, a kind of horror thing that claims to blow up a street with a drop, of course, this thing is also a taboo, and among the five major forces, only Prali, who has money and can be a god, has some inventory, and this time he gritted his teeth and took out all the inventory.

The two teams of machines left behind blocked the transformation people at the exit of the underground base, the exit was not built in order to conceal it, and it was also the most primitive mechanical parts, which could not be expanded like photonic equipment, and at most three people rushed out at a time, and were blocked by more than 30 people at the door, no matter how crazy the transformation people were, they couldn't rush out for a while.

Not to mention the fact that more and more corpses are piling up half of the exits.

After the troops had retreated, one of the men at the head ejected a black water bomb the size of a fountain pen into the exit.

Three seconds later, a huge blue energy ball with a diameter of more than a thousand meters rose from the ground, and the blue energy torrent continued to rotate and stir at high speed, destroying all the qiē within this range, and when the qi ē subsided, a huge crater like a meteorite appeared in place, and at the bottom of the crater, you can see the red-hot magma continuously pouring into a channel.

This is the terrifying power of Blackwater, known as the most powerful physical bomb of mankind at present, except for the extremely special and rare space bodon bombs, at the same level, the explosive power of Blackwater is the strongest.

At the same time as this explosion, there was another place where a huge crater was blown up with a black water bomb.

But these two places are two or three kilometers away from Tianxiang City, and the other exit is inside Tianxiang City, so you can't use black water bombs.

In fact, the outbreak of the virus in Tianxiang City started from this exit.

At the moment when the exit opened, it was not those crazy reformers who came out first, but a mechanical virus that was so thick that it became smoke-like, because it was too sudden, and the troops could not react immediately, losing dozens of people, and the bell who commanded the scene was so angry that he jumped to his feet.

The response of the command post of the headquarters was very fast, and immediately dozens of detoxification machines that had been modified long ago drove over.

Since Luo Tang uses mechanical viruses, he can't get rid of the weakness of mechanical viruses, that is, once he masters the control codes of these viruses, then he can control them before they are infected. To put it bluntly, these mechanical viruses are just a variant of nanomachines.

Although these mechanical viruses have changed the way of transmission, from the beginning of blood transmission to the current air transmission, but it has not changed at all, when the detoxification machine opened the control wave with a special code, the spread of the mechanical virus was immediately controlled, and those black fog like death began to slowly sink to the ground, and finally turned into a thick black ash.

These black ashes are those mechanical viruses, just a small handful, there are tens of thousands of mechanical viruses. And according to the dissection of the infected person, it only takes more than a hundred mechanical viruses to replicate and spread autonomously inside the human body, and then infect.

If these black mist-like mechanical viruses completely spread out, not to mention the nearly two million people in Tianxiang City, even half of the Light Cross Continent, they would all have to become a paradise for the infected.

Although the detoxifier is very effective, there are too many mechanical viruses released this time, even if it is the part released by the detoxifier when the detoxifier does not come at the beginning, it is enough to infect the entire northern district where the product is located. And these mechanical viruses are not the same as real viruses.

Viruses that are really airborne need to be driven by air currents to spread, and without air flow, these viruses cannot move on their own. But mechanical viruses are different, they are actually a group of semi-nano people with cell characteristics, since they are nano machines, they have one of the biggest advantages of nano machines, that is, clustering.

Nanomachines are very weak and can't do anything at all, but once the number reaches more than 100, they can activate clustering, and the more they are, the more powerful the clustering will be. The so-called clustering refers to the number of nanomachines that have reached a certain number of dù and people come together to act towards a common goal.

Scientists once took advantage of this clustering and invented the nano clustering machine qì human. From the outside, this kind of machine is exactly the same as a human, but every cell in this machine is composed of nanomachines, and this kind of cluster machine is very capable, but because it cannot make a breakthrough in intelligence, and it is easy to be discovered by others and then counter-control the user, it eventually became history.

But it can be seen from this that clustering, a characteristic of nanomachines, is very diffusive.

These mechanical viruses that spread out gathered together and turned into countless windless automatic black clouds, which spread in the northern part of the city. If these are destroyed, then the spread of the virus can not be controlled, and the disaster caused is even greater, in desperation, the machine qì people began to enter the north of the city to exterminate the infected, fortunately, now that science and technology are developed, as long as people stay in the house and do not come out, even the virus cannot be spread immediately, although the mechanical virus has spread to the north of the city, most of the residents have returned to their homes or shelters, so there are not many infected people, only a few thousand really unlucky guys, either because of curiosity and disobedience, did not come home, or there was something wrong with the defense equipment at home.

Machine qì people will not have feelings, they all have the main control light brain control, and there will be no hesitation at all when encountering an infected person, and they will be killed immediately. At this time, I saw the importance of the propaganda at the beginning, and under the uninterrupted three-hour propaganda, everyone understood that there was no hope for treatment after the infection of this mechanical virus, and they also knew the horror after the spread of this virus, so no one stood up against the ruthlessness of the machine and people, and let the extermination operation go very smoothly.

Although the extermination work in the northern part of the city is smooth, the west of the city and the east of the city are completely different. There are no entrances and exits of the underground base in those two places, but there are countless exhaust outlets, unlike all the viruses in the north of the city that are discharged from the entrances and exits, the west and east of the city are completely discharged from thousands of exhaust outlets scattered here, and these exhaust ports are all ancient mechanized, and by the time the main control optical brain discovers that there are viruses in the air, it is too late.

In less than ten minutes, the entire Tianxiang City, except for the south and north of the city, had completely fallen into the frenzy of infected people.

If more than 600,000 people had not been transported away at the beginning, there would have been many more infected people now.

& Immediately dispatch all the men to exterminate the west and east of the city, and issue a notice that all people who are at home and in the shelter must not go out, and that the defense and early warning capability of the house will be maximized!" Li Xiuning issued an order at the command post of the headquarters.

A large number of people come out of various hiding places. All the machine people, even if it is a service machine, if they enter the intensification mode, they also have a strong attack power, at the very least, the power of self-explosion is not small, in today's society, a city with a population of nearly two million, the number of types of machine qì people, I am afraid that there are more than humans.

There are more than 100,000 infected people in the two areas, mainly because some of the exhaust outlets are not on the streets, but in shelters and houses, which has caused such a large number of infected people.

After Li Xiuning finished the task, he looked up at the countdown.

There are five hours left.