Those who reincarnate must die.

Reward Type: Blood Enhancement

Award Name: Iron Mouth and Steel Teeth

Rarity: Common

Effects: Significantly increases bite force, strengthens teeth, mouth, jawbone, and skull, making your mouth your most formidable weapon.

Note: Since the emergence of jawed fish more than 400 million years ago, the mouth and teeth have been the most powerful weapons of vertebrate predators. However, humans have abandoned this weapon that has been in use for tens of thousands of years. Now, would you be willing to pick it up again?

…………

The ability to bite? Zhang Lang raised an eyebrow; it didn't seem very useful...

"If you don't like it, you can return it!" Xu noticed Zhang Lang's hesitation.

"How do I get a refund?" Zhang Lang raised an eyebrow. "Will I get my points back?"

"How could that be!" he chuckled. "Wouldn't that just let you randomly farm enhancements here? You can choose to revert to this enhancement and then obtain the corresponding attributes!"

"Exchange enhancements for attributes?" Zhang Lang thought it sounded pretty good. "How much can we get?"

"Let me see... a basic enhancement... might yield some random attributes!"

"Just a little?" Zhang Lang was taken aback. "That's such a loss!"

"It's alright!" he said with a forced smile. "These things are bound to suffer some damage..."

After considering his pitifully low stats, Zhang Lang still chose to accept the enhancement!

He felt a tingling, itchy sensation throughout his head, especially in his jawbone and masseter muscles, which subsided after a moment. Then, he tried clenching his teeth and indeed felt a significant increase in his bite force; his canines even seemed slightly longer than before!

After finishing the enhancement, Zhang Lang opened the sliding door again, took out two pieces of raw meat that he had just hunted the day before, carried them upstairs, and fed them to Aya.

Looking at the monster pacing back and forth in the cage, Zhang Lang's thoughts drifted back to the beginning of the pandemic...

Xiaoya initially still retained a human form and some memories. Zhang Lang hid her in his house, covering the door with furniture and boarding up the windows.

All sorts of strange-looking humans roam the streets outside... Some can no longer be considered human; they have completely lost their intelligence and memory, leaving only the instinct to hunt...

For example, Uncle Zhang next door transformed into a giant wolf with two heads and ate his wife and children, who were mutating more slowly.

Old Li, who used to fry dough sticks on the street every day, had also turned into a grass-eating triangular bull. Suddenly one day, he was pounced on by a swordtail lion, which bit off his organs, cut open his belly, and ate his internal organs alive...

The sword-tailed lion was still wearing a leather belt. Zhang Lang recognized it at a glance as the unique style of the belt. It was the same Xu Langzhong who used to buy Old Li's fried dough sticks every day. He never thought that after eating Old Li's fried dough sticks all his life, Old Li himself would become his last meal.

Moreover, Zhang Lang discovered that these mutated monsters did not seem to have any species distinction at first... He remembered that Xiao Ya had mentioned a term to him in a boastful manner after studying natural science... something like reproductive isolation?

That's right. Initially, there was no reproductive isolation among these monsters. As long as they were of similar size and had similar habits, they could fall in love. In addition to hunting, they all had a strong desire to reproduce. They fused and bred with each other. In the end, the growth rate of the offspring was also extremely fast. They could usually reproduce again in ten days. Soon, a relatively stable population was formed!

In the fierce competition, those strangely shaped, erratic monsters gradually disappeared, and those that survived were species with rational and efficient body structures and stable bloodlines...

This process, which might take tens of thousands, or even millions of years, to complete in nature, stabilized in just a few months. After that, probably because the effects of the so-called "gene-activating agent" wore off, the mutation and growth rate of these monsters slowed down significantly, and they began to resemble normal organisms.

Looking at this harmonious and self-consistent new ecosystem, it's hard to imagine that just over a year ago, these monsters were all mutated from humans and ordinary animals!

During this process, Xiaoya's condition gradually stabilized. Eventually, she went from being able to vaguely call out "brother" at the beginning to completely losing her human intelligence and memory. She began to roar and howl at him, only showing a little obedience when being fed...

Looking at Zhang Ya, or rather, the monster Zhang Ya had transformed into, wolfing down chunks of meat in the cage, Zhang Lang's eyes revealed tenderness and sorrow...

"I will definitely become stronger! I will kill even more reincarnators!" Zhang Lang gripped the iron bars, his steel teeth grinding together. "And then, I will find a way to restore you!"

After saying that, Zhang Lang went down the stairs and carefully headed outside to begin today's hunt!

He didn't pick up the flintlock pistol again. This martial arts contest made him realize that this old-fashioned firearm was ineffective against powerful reincarnators or even local experts.

His attributes have improved, and his body is stronger and more agile. Rather than relying on this unreliable weapon, he should hone his skills!

After all, in terms of weapons, skills, and spells, he was not on the same starting line as normal reincarnators. His only reliance was his own strength! He could only push this path to its limit!

In the days that followed, he hunted monsters in and around the town every day, not just for food, but more so to accumulate combat experience, adapt to the new attributes and abilities he had acquired, and grow stronger through repeated life-and-death battles.

Finally, one month later, just as Zhang Lang had used his iron teeth to bite through the neck of a swordtail lion, he heard Xu's voice in his mind!

"Another mission!"

Zhang Lang tore open the blood vessel with his canine teeth, gulped down several mouthfuls, and then wiped the blood from the corner of his mouth.

"How many reincarnated beings are there?"

"The exact number is unknown..." Xu chuckled, "but five altars are involved!"

"So, five teams?" Zhang Lang frowned slightly. Xu had told him before that the altar was just a general term. In reality, there were thousands of altars in the world. Reincarnators acted in units of altars. Each altar was a team, ranging from a few people to a dozen or even twenty or thirty people. They cooperated and competed with each other.

"What, scared?" he chuckled. "If you're scared, you can wait a few days and find someone else..."

"No!" Zhang Lang shook his head: "I've just never encountered so many teams before..."

"You've gotten stronger!" A hint of pride lingered in Xu's voice. "I need to increase the difficulty a bit! Risk comes with opportunity, after all!"

Zhang Lang nodded: "What about weapon restrictions?"

"Level 3!"

"Not low at all..." Zhang Lang hoisted the monster's corpse, which weighed a good half ton. "Once I've eaten my fill, we'll set off!"

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