"Xiao Hei, we have only upgraded to a few levels in the 17 cities in five years. "Clark bit the chocolate and said to Xiao Hei, who was sitting on his shoulder and gnawing on the chocolate. "We may have calculated it wrong. Eliminating the poison nest is a reward for many experiences, but compared to the numerous zombies and the crystals obtained after destroying the zombies, we don't have much experience. We have to work hard to kill a poison nest enough to destroy tens of thousands of zombies. Moreover, the defense of the poison nest is getting stronger and stronger. My axe is blunt and it will not cause much damage to the poison nest. We have to find an opportunity to get a more powerful weapon."

"Yeah!" Xiao Hei nodded while gnawing on the chocolate.

"We can get a little improvement in attributes by swallowing one crystal before level 10. We can only get a little improvement in attributes for every ten crystals we swallow from level 11 to level 21 to level 30. We need to swallow twenty crystals to achieve the effect of improving attributes. We spend too much time dealing with the overall strength of the poison nest is not high." Put the last piece of chocolate into our mouths. "In the future, we will focus on slaughtering zombies as our main goal, and put the poison nest in the second sequence."

"But" Xiao Hei also stuffed the last piece into his mouth and ate it, and said, "But Dad, we won't be too efficient in chasing zombies."

"Hehe, don't worry about this. Zombies are very sensitive to sounds. A few days ago, didn't we collect some mobile phones in a mobile phone store next to the supermarket? We used mobile phones to create huge sounds to attract all the zombies that can be attracted and then we eliminate them in one breath. The efficiency is absolutely fast. This is a strategy for online games in previous lives."

“Is it effective?”

"Little brat! You know what you know, just learn it." Clark took out a mobile phone from the package. This mobile phone was the most advanced mobile phone that was just launched when the virus broke out. Each sold 100,000 yuan. When the virus broke out, these mobile phones were thrown in the store and no one asked about it. Fortunately, no one cared about it. Clark had the opportunity to get several of this latest mobile phones. Another feature of this latest mobile phone is solar charging. Clark got several mobile phones from a mobile phone store and more than a dozen rechargeable batteries. Since he saw the mobile phone, he had already had the idea of ​​using his mobile phone as a speaker to attract zombies to sweep monsters. He turned on a mobile phone and chose a heavy metal music to keep the interface in a pause of playback. "Let's go, try the effect."

Hei came to the street, tied his cell phone with a cloth strip to his wrist and only leaked the control keys of the display interface. He held the blunt fire axe and tapped the phone with his other hand holding a short gun. The noisy and rhythmic heavy metal music was played out. Listening to music or humming songs while doing things was Clark's habit in his previous life, especially when typing online, he liked to play heavy metal music the most. He would feel that his spirit was refreshed and more concentrated now made him feel like he was reliving the past.

Xiao Hei covered his ears and wrinkled his three pairs of small eyes.

Woooooooooooooooooo! There are dense zombies coming from both ends of the street. A large number of zombies also emerge from the buildings on both sides of the street.

"Xiao Hei is working!" Clark, who was like taking hormones, rushed into the zombie group, swept several zombie heads with his left hand, and scored several zombie heads with his right hand, and flew into Clark's mouth with his right hand.

"..." Xiao Hei's growing mouth looked at Clark who was like a tiger entering a flock of sheep and was stunned. "Dadfam was possessed or taken drugs?"

Shaking his head, Xiaohei rushed into the zombie group, his movements were faster than Clark.

Two killing gods killed several times on the street until no zombies appeared again. Clark turned off the phone on his wrist, "How is it? Xiao Hei has gained a good harvest."

"Dad, the efficiency is really faster, and the number of attributes is improved is quite similar to that of me. I have been upgraded several levels."

"My side is similar, but we will increase the difficulty. This time we just try to attract zombies on this 100-meter street. In the future, we will flow within a few miles to attract all the zombies in this area to destroy them. Let's rest for a day whenever we eliminate zombies within a few miles."

"Okay!" Xiao Hei, who tasted the sweetness, naturally raised his six limbs to agree.

"But then, the number of zombies will be dozens or even hundreds of times the number just now. Don't be too far apart when fighting to avoid being separated. You have to take turns to rest after fighting for a certain period of time. If there are too many, you can find a place that is easy to defend and difficult to attack while fighting."

"Yeah, it's all my fault. Let's start again." Xiao Hei couldn't wait to rub his head against Clark's face.

"You guy, let's start!" After adding points to yourself at two points of strength, a little endurance and a little speed, Clark took Xiao Hei to another street.

Clark and Xiao Hei used their mobile phones to play music to attract zombies. A small and medium-sized city only covers an area of ​​about ten square kilometers. Clark and others used four or five square kilometers as a cleaning area to clean up. Every time they cleaned an area, they would rest for a day. A small and medium-sized city covering an area of ​​about ten square kilometers, they would only clean up for about one month. The population of such small and medium-sized cities is about 100,000, which means there are about 100,000 zombies. The corpse crystals obtained can bring more than 100,000 attribute points to Clark and Xiao Hei. The more they kill, the stronger they are, they will kill this method for a week. After a year, they will only take one day to clean up zombies of the same area. It will only take one day to clean up zombies of the same area. It will only take two and a half days to eliminate zombies. They will only rest in search of supplies in the city and rush to another city.

In seven years, more than fifty zombies were wiped out from south to north. More than four or five million were wiped out. There were always several or even hundreds of survivors who began to clean up the remaining zombies, greatly improving the combat effectiveness of survivors.

"Dad!" Xiao Hei jumped on Clark, who was lying on the sun, and looked down at Clark's eyes and shouted.

"What's the discovery?"

"Finding a group of primary virus factories!"

"What!" Clark sat up suddenly. "What does the virus factory look like?"

"I don't know! I only saw a large number of zombies around the virus factory and there were virus-carried creatures in the factory surrounded by zombies. The specific situation was because there were too many zombies around the virus and couldn't see clearly."

"Let's go!" Put away the solar cell phone battery that was acting in the sun and jumped from the roof with Xiao Hei. At present, their attributes are fine if they jumped from the top of a seventy or eighty-story building. It's not a big deal if they jumped down a building that was only about ten stories high.

Soon under Xiao Hei's leadership, Clark arrived at the legendary virus factory, turned on the mobile phone broadcaster and played heavy metal rock songs to kill the zombies. Faced with the zombies who had not advanced, Clark and Xiao Hei really made every move and killed hundreds of zombies. It was just like playing. Soon the zombies outside the virus factory were cleaned up and entered the virus factory. Only then did they find that the so-called virus factory is actually an automated farm before the virus outbreak. Since the farm is automated from hatching to feeding and slaughtering, and there is also an independent generator inside, the farm will continue to operate even if the electricity is out. The reason why it becomes a virus factory is because the feed is contaminated and the cultured poultry naturally carries viruses, and the slaughter of poultry with viruses has attracted a large number of zombies. In a sense, the virus factory has similar functions to the poison nest.

The independent generator of the virus factory was closed and killed all the poultry infected with the virus, poured gasoline on all places and fired the entire infected automated farm clean. This was why I got the reward prompt for cleaning up a primary virus factory.

"If we can tell everyone about the virus factory, it may be able to reduce the number of virus factories in the world."

"But how can we spread the news from Dad?"

"We need to find a signal transit station here, maybe to a larger city. In larger cities, there are often TV stations where the equipment is very powerful or can be connected to satellites to deliver the message." As he said that, Clark took out the map he found before and spread it out.

Xiao Hei also jumped to the map and looked serious. In fact, he was just interested in the colorful colors on the map.

"Let's go here. The provincial capital has absolutely no way to contact the outside world. There are tens of millions of people there, and there will be no cleaning up in a short time. Maybe some survivors can be found to help us spread the news." Clark's tone was light when he mentioned the survivors, obviously he was not very concerned about finding survivors.

Clark and Xiao Hei found a Land Rover from the city they cleaned up, filled the vehicles with all the materials they collected and drove them on the road. He learned about cars from his friends in his previous life but never got on the road. Now he can drive the car he liked for a long time on the road, even if he overturned, he still made up his wish. He had no chance of affording this model of car in his previous life.

It was driving like a drunk driving on a road where broken vehicles were everywhere. Bumping and scratching was inevitable, but this small problem was not within the scope of Clark's consideration. It took hundreds of kilometers of roads to stop the vehicle on the edge of the city. It was not that they didn't want to drive in, but the problem was that the roads entering and leaving the city were blocked by vehicles that fled out of panic and collided with each other. Clark had to take Xiao Hei and some essential items before getting off the car.
Chapter completed!