This zombie had a huge wound on its left chest, and from the wound, a beating heart could be seen continuously wriggling, with a large amount of foul blood overflowing from the wound, indicating that this zombie was already injured.

After emerging from the dust, this zombie acted as if it had gone mad, raising its arms and smashing wildly in all directions. The zombies attracted by the sound all suffered, and even buildings were toppled by him.

Feng Jun took out a telescope-like instrument from his storage space and observed it. The data reflected on it scared him so much that he almost dropped the instrument in his hand.

Name/Codename: Sawtooth

Species: Zombie Evolving

Energy Value: 300+

This instrument was a detector Feng Jun had exchanged for in Huai City, called a Biological Energy Detector. It could detect the mutated energy values within zombies and Mutated Creatures. In the Doomsday, after zombies and Mutated Creatures evolve, they store excess energy in their internal helium crystal.

Therefore, the greater the value within the body, the stronger the Mutated Creatures’ strength.

Generally speaking, ordinary zombies can generate helium crystal energy values between 5 and 10 helium crystal points, while Mutated Creatures capable of producing helium crystal are between 20 and 30 helium crystal points. If the helium crystal points within the body can exceed 200 helium crystal points, it is considered to have entered the ranks of Mutants. Mutants like Roadblock produce helium crystal points between 400 and 600. The Sawtooth zombie in front of him showed about 300 helium crystal points on the instrument, firmly placing it in the Mutant category.

To encounter such a Mutant-level creature here was unexpected. Logically, such creatures would not easily leave the city center. Ordinary people encountering Mutants could only be treated as sacrifices. Although Feng Jun was wearing a very formidable set of equipment, he was not confident enough to directly confront this Sawtooth Mutant.

Putting away the detector, Feng Jun was about to turn and run, but suddenly a voice sounded in his mind.

“Detecting a creature containing a gene seed. Host, please eliminate it as soon as possible, otherwise, you will be penalized with a downgrade.” A clear voice appeared directly in Feng Jun’s mind, coming from the storage space. Feng Jun couldn’t help but stop. This Mutant in front of him actually contained a gene seed, and the storage space reminded him to eliminate it as soon as possible, otherwise, he would be penalized with a downgrade. It had been more than two months since Feng Jun obtained the ability to traverse and the storage space. He had only received the task to collect gene seed at the very beginning, and since then, he had never received any other information from the storage space.

Looking at the Sawtooth in front of him, Feng Jun was in a bit of a dilemma. The gene seed he was looking for was on this zombie. However, seeing the terrifying destructive power of this Sawtooth, Feng Jun began to feel hesitant.

Just as Feng Jun was hesitating, a black shadow suddenly darted out from the ruins behind the Sawtooth, heading directly for the back of the Sawtooth’s head. Just as it was about to hit, the Sawtooth’s head dodged to the right, and the black shadow flew past the Sawtooth’s scalp, bringing up a large splash of blood.

“Old Eight?” Feng Jun exclaimed. The black shadow that had just attacked Sawtooth was Li Lu’s Mechanical Dogs, Old Eight. Since Feng Jun took over Iron Nail Town, Li Lu had asked Feng Jun for leave to go into the ruins, and it had been almost half a month. Feng Jun had even sent people to inquire about Li Lu’s whereabouts, and he never expected to see Old Eight here today.

Since Old Eight was here, then Li Lu must be nearby. In Feng Jun’s impression, Old Eight was always inseparable from Li Lu. Looking at the wounds on Sawtooth’s body, they must have been bitten out by Old Eight.

At this moment, Old Eight stood on the road not far from Sawtooth, its mouth holding a large piece of flesh torn from Sawtooth’s head. Its originally blue electronic eyes had also turned red. Feng Jun remembered Li Lu telling him that this was how Old Eight looked when it activated its combat mode. It was truly unexpected that Old Eight, in combat mode, was so fierce. If he hadn't returned in time to stop Li Lu and Song Peng that day, Song Peng and Song Zhan would definitely have suffered greatly if they had actually fought.

At this moment, Old Eight flicked its neck, throwing the flesh in its mouth at Sawtooth’s feet. It then continuously paced back and forth on the ground, seemingly provoking the Sawtooth opposite it.

Zombies that have evolved to the Mutant stage have already grown new flesh within their bodies, and even their internal organs have begun to revive. The last Roadblock encountered, after its leg was severed, the blood that flowed out was bright red. The Roadblock in front of him, although its skin was still a grayish-white rotten appearance, blood-red muscles had grown beneath its skin.

Sawtooth stared intently at Old Eight in front of him, reaching out to touch the back of his head. Seemingly feeling the pain, he opened his large mouth full of sharp teeth and let out a roar, extending his right hand to grasp a streetlamp by the roadside, and forcibly pulled the streetlamp, which was embedded in the ground, out of the ground, gripping it in his hand and smashing it towards Old Eight.

Old Eight easily dodged Sawtooth’s swing, avoiding the opponent’s attack with a few leaps. It also took the opportunity to flash behind Sawtooth and tore off another piece of flesh from it.

“With the help of this dog, I might be able to take down this Sawtooth.” After some thought, Feng Jun decided to join the battle, as he had many good things stored in his storage space besides the mechanical exoskeleton he was wearing.

After a few leaps, Feng Jun had already approached the building where Old Eight and Sawtooth were fighting. For some reason, Feng Jun felt a hint of excitement at this moment. He raised the M64 in his hand, aimed at Sawtooth’s head, and unleashed a burst of bullets. Most of the bullets accurately hit Sawtooth’s head, but these bullets were blocked by Sawtooth’s mutated bones and did not cause much damage to it.

Sawtooth, who was chasing Old Eight, did not notice Feng Jun until he took a dozen shots to the head. Only then did he stop and discover Feng Jun standing on the rooftop. The unintelligent Roadblock immediately abandoned Old Eight and began to chase Feng Jun. Compared to Old Eight, who was made of iron, the human with flesh and blood was more appealing to him.

“Damn it, I just wanted to harass it.” Seeing Sawtooth charging towards him, Feng Jun immediately activated his thrusters. A few tactical leaps created distance.

He carefully examined Sawtooth’s head. His bullets had hit many times, but they hadn’t caused much damage. Feng Jun immediately removed the magazine from his gun and took out a magazine full of explosive rounds from his storage space, loading it into the gun. Usually, Feng Jun used ordinary bullets to deal with common zombies, but to deal with Mutants like Sawtooth, he had to use explosive rounds.

“You little rascal, one burst of these will definitely rip your skin apart.” Feng Jun, having changed the magazine, immediately aimed at Roadblock and pulled the trigger.

Although the M64 was a general-purpose rifle that could fire explosive rounds, the recoil when firing explosive rounds was still greater than with ordinary bullets. However, Feng Jun was standing on the rooftop, looking down, and a 40-round magazine of explosive rounds directly covered Sawtooth’s entire body.

Each bullet of the explosive rounds was filled with a miniature bomb, capable of exploding upon hitting the target, with power similar to that of a small hand grenade. If it were an ordinary zombie or Mutated Creatures, after taking 40 explosive rounds, it would probably be reduced to dust. But hitting Sawtooth’s body only blew off its rotten outer skin and did not cause much damage to Sawtooth.

After the explosive rounds detonated, a cloud of smoke rose. Feng Jun was leaning over from the rooftop, looking down. Sawtooth directly threw the streetlamp in his hand towards Feng Jun.

“Beep, beep, beep.” Detecting a flying object, the mechanical exoskeleton’s evasion program was triggered. The exoskeleton controller, Feng Jun, twisted his body to the side, and the streetlamp flew past Feng Jun’s face, barely missing him.

“That was close.” He almost got his head blown off by the streetlamp.

The Sawtooth below directly leaped from its spot and clung to the wall of the building, using its hands and feet to start climbing towards the rooftop. The explosive rounds had only ripped apart the skin on its upper body, not affecting its movements in the slightest.

At this moment, Old Eight also noticed that Sawtooth had been attracted by Feng Jun. After observing for a while, it recognized Feng Jun. It immediately climbed the wall from the other side and came to Feng Jun’s side.

Feng Jun saw Sawtooth struggling to climb towards him, so he immediately moved to the other side of the rooftop. His shoulder-mounted laser cannon and rocket launcher rose, unleashing a barrage of firepower at Sawtooth.

Although Sawtooth’s skin was already tattered, its bones were surprisingly hard. And all of its ribs had grown into one piece. Feng Jun’s barrage of firepower did not cause it any damage.

“Normal weapons are ineffective? Then let’s go big.” Feng Jun directly pulled out a bazooka from his storage space and fired it at the struggling Sawtooth.

After a loud explosion, Sawtooth, along with a large section of the floor, fell down and was buried beneath the collapsed floorboards.

“It should be dead or crippled now, right?” Feng Jun was not entirely at ease, so he took out the bazooka from his storage space again and fired two more rounds at the spot where Sawtooth had fallen before stopping.

At this point, Sawtooth was completely motionless, with only one foot still exposed outside the collapsed floorboards.

“With this level of skill, it couldn’t even withstand a few bazooka shots.” Feng Jun stood on the rooftop, looking down, truly embodying the saying: when poor, shoot precisely; when rich, unleash a barrage of firepower.

At this moment, Old Eight had already climbed up from the other side of the wall and moved behind Feng Jun.

“How did you get here?” Li Lu’s voice came from Old Eight’s mouth.

Hearing Li Lu’s voice, Feng Jun turned around and looked around, but he only saw Old Eight and not Li Lu’s figure.

“Don’t look, I’m not near you. I’m talking to you through Old Eight’s loudspeaker.”

“You’ve been gone for several days. As your boss, I’m worried about you, aren’t I? Where are you now? Why don’t you come out and talk to me?”

“I’m injured and currently hiding somewhere. This isn’t the place to talk. While Sawtooth hasn’t recovered, you should leave quickly,” Li Lu said.

“That thing isn’t that strong. Even if it’s not dead yet, I’ll just hit it with a few more rockets,” Feng Jun said, patting the bazooka in his hand.

“It’s not an ordinary Mutant zombie. You need to leave there quickly now,” Li Lu said anxiously, having personally experienced the terror of this zombie.