A group of black cars blocked his path, and men in military uniforms emerged, surrounding his car. Seeing this, Li Yun Fei grew uneasy. He sensed that something was about to happen.

“Brat, they don’t have qi fluctuation around them, but I sense that their bodies are not those of ordinary soldiers. Kill them all to avoid problems. Be careful,” said the old demon.

“Master, this is modern society. I can’t kill easily. If I kill them, what if I leave behind some evidence? It will make trouble for my mortal parents,” said Li Yun Fei, his unease evident.

“Alas, why is my disciple so dumb? Think about it. Since they're from the military, why don’t they invade your house instead? Why follow you to this tunnel? It seems there may be some unbreakable rule between mortals and cultivators. Just kill them all,” said the old demon impatiently.

At that moment, a military officer, who appeared to be the leader, stepped forward and said, “Li Yun Fei, we're from the military defense force. We have orders to bring you back. Come with us peacefully, or we will have to capture you by force.”

Hearing their threat, Li Yun Fei's mind turned cold, and a murderous aura suddenly surged out from him. Then, he got out of his car, gripping a bat that he had in his car. Seeing Li Yun Fei preparing to fight back, the military officer immediately issued a command, “Capture him alive!”

The soldiers charged at him with bare hands, daggers, and sticks. But even though they were not ordinary soldiers, how could they be a match for an abyssal body refiner?

As the soldiers closed in, Li Yun Fei's movements were swift and precise. With each swing of the bat, he incapacitated his assailants with calculated strikes. The soldiers, caught off guard by his skill and strength, struggled to subdue him.

In the midst of the chaos, Li Yun Fei's mind raced. He knew that he couldn't afford to be captured, not when his past was catching up to him. Memories of his previous life as Li Yuan, the renegade devil, fueled his determination to resist.

With a fierce roar, Li Yun Fei tapped into his sealed cultivation, channeling his qi at the meridians refinement stage one to enhance his combat abilities. Despite the seal on his cultivation, remnants of his Abyssal Body Technique surged within him, infusing his movements with a dark energy that granted him incredible speed and strength. His Great Demon Emperor Physique automatically activated, causing the dark aura to gain the ability to drain life force.

As the soldiers continued their assault, Li Yun Fei's Abyssal Body Technique manifested in full force. Each strike became more lethal, infused with a dark aura that drained the life force from his opponents. With precise strikes to pressure points, he incapacitated the soldiers, leaving them writhing in pain before succumbing to the darkness. Unknowingly, he utilized the innate ability (Life Forces Draining/Absorbing) from his Great Demon Emperor Physique, proficiently tapping into its power.

Driven by the primal instincts of his Abyssal Body Technique, Li Yun Fei fought with a ferocity that bordered on inhuman. His movements were a blur as he danced through the chaos, a shadowy figure amidst the carnage. In his mind, there was only the instinct to kill, devoid of any sense of mercy.

Despite their numbers, the soldiers soon found themselves overwhelmed by Li Yun Fei's dark power. One by one, they fell to his relentless onslaught, their life force drained by the abyssal energy coursing through his veins and refill the strength he lost but just a little.

As the last soldier crumpled to the ground, defeated, Li Yun Fei stood victorious but exhausted. Breathing heavily, he surveyed the scene before him, his mind racing with thoughts of what lay ahead. Then he heard clapping echo through the tunnel.

"Well, well, well. Looks like the descendant of two ancient families isn't one to go down easily," remarked the military officer with a mocking expression. "If I had known earlier, I would have brought more men to exhaust you. Seems I underestimated your strength."

Li Yun Fei's exhaustion mingled with irritation at the officer's taunts. Despite his weariness, he straightened his posture, refusing to let the mockery unnerve him.

“Well, it seems like you have emerged victorious, brat. But mark my words, the next time we meet, it will be your most unlucky day,” said the officer before departing.

Seeing the officer leave, Li Yun Fei sat down on the ground, panting. He then began to ponder his state of mind during the intense combat, realizing that he had lost himself in the killing frenzy. He also contemplated the mysterious ability to drain life forces, puzzled by its origins and implications.

Looking at the lifeless bodies surrounding him, he felt overwhelmed by the aftermath of his actions. His clothes stained with blood, he wondered how to dispose of the corpses. Suddenly, the soul form of the old demon emerged from his mind, observing him with satisfaction.

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“Well done, brat. It seems you're quite adept at killing,” remarked the old demon.

Li Yun Fei looked up at the old demon and asked, “Master, when I was killing them, I lost control of my mind. All I could think of was killing. What is happening to me?”

The old demon explained, “It's a side effect of training in the Abyssal Body Technique. To master the Abyssal Body, one must confront the risk of losing oneself to the killing intent, or become a ruthless killing machine. It all depends on your skill and control.”

Seeing his disciple wanting to ask him more, and knowing he wished to inquire about the life force draining ability, he stopped him. “Brat, I know what you want to know. Your physique is something special, I think. In our previous world, there isn't much recorded about it, only describing it as having dark energy. So you have to find out for yourself.”

Then, looking at the lifeless bodies, he said, “Store these bodies in your space ring obtained from your grandfather. We may have a good use for them in the future.”

Li Yun Fei followed his master's instructions and stored the bodies. As he looked at the bloodstains on his university uniform, a headache began to creep in. Skipping class again today because of his uniform would only invite more scolding from his father, and he couldn't afford that. Just then, the old demon offered a suggestion, "Since you have the life-draining ability, why not use it to extract the bloodstains from your uniform?"

Taking his master's advice to heart, Li Yun Fei focused on utilizing the ability and found that it worked effectively. With a sense of relief, he watched as the bloodstains gradually faded away, leaving his uniform clean once more.

Suddenly remembering something important, he asked, “Master, when can I break the seal? In the fight, it wasn't very comfortable. If I fight longer, even if I absorb life forces, I can't last long.”

The old demon considered this and then replied, “If your physique can increase force when activated, then you might be able to break the seal upon reaching the second stage: Internal Refining, but there's only a 25% chance of success. It's better to aim for the third stage: Abyssal Infusion. For a 100% success rate, you'll need to reach the fourth stage: Soul Corrosion.”

“Brat, you’ve only completed the first refinement of the first stage. Why are you asking so much already? Just train harder! If you can find abyssal qi, you can finish the first stage easily, but since you've used other similar qi, you’ll need to refine your body five to ten times, depending on your body's adaptability, until you can transform your qi into a fake abyssal qi,” scolded the old demon.

Li Yun Fei heard he had to refine his body five to ten times, but he didn’t feel too concerned because it would increase his body's resistance, recovery, strength, and speed. However, he felt annoyed because the technique he received from the old demon didn’t mention these details. Unable to tolerate it any longer, he confronted his master. “Master, it seems the Abyssal Body Technique you gave me is incomplete. It doesn’t mention these things.”

The old demon laughed heartily. “Why didn’t you ask earlier? Hehe. Well, brat, I’ll give you the original technique now.” The old demon touched Li Yun Fei’s forehead and transferred the complete technique. After receiving the technique, Li Yun Fei carefully checked for any more tricks and, finding none, finally felt a sense of relief.

He then headed to the university. Upon arriving, he noticed that there were no people around this late and the gate was closed. Undeterred, he climbed over the wall. As he jumped down, he was stunned to see someone standing there: Professor Yun. His heart sank, and he cursed inwardly, "Fuck, why the hell is she here?" Out loud, he said, "Hi, Professor Yun. Well, it's not what you think, hehe."

Professor Yun's face was stern. "Li Yun Fei, since your father contacted me to guide you closely, I will not forgive even the slightest mistake. As for today, even though it’s the first time you’ve done something wrong under my watch, I can’t let it go unpunished. Go and kneel in front of the class from now until the end of the lesson." With that, she turned and left.

Knowing he couldn’t do anything about it, Li Yun Fei cursed under his breath, “Damn woman, hope you don’t get a husband in this life and be a single dog for the rest of your days.” Then, he went to the classroom and kneeled down.

Seeing the popular scumbag kneeling for the first time, the students couldn't stop talking about him, curious about who dared to punish him.

“Hey, who do you think dared to punish him?”

“Umm, I think it’s Professor Shi.”

“No, it can’t be. Last time, he tried to punish him and ended up with a bruised face after chasing Li Yun Fei.”

“Maybe it’s Professor Yun. Only she can do such a cruel punishment. Hehe, finally, he got what he deserved.”

It was unmistakable that the girls were the happiest, as they could finally learn peacefully from their teachers and professors.

Li Yun Fei knelt there, enduring the whispers and giggles. But not long after, two more candidates were brought in by Professor Yun. They were unmistakably Zhang Wei and Murong Xing. Seeing them, Li Yun Fei felt a mix of amusement and relief, happy that he wasn't the only one being punished.

"Hey, fat guy and muscle man, how did you end up here like this?" Li Yun Fei asked, laughing.

"We've always been late, sneaking in easily. I don't know who convinced my father to have me and the muscle man put under Professor Yun's close guidance. Fuck. Today, we snuck into the university from the back gate and suddenly ran into Professor Yun, and here we are," Zhang Wei cursed.

"Damn it, fat guy. If your father hadn't included me, I would be free. Xiao Fei, don't tell me you’re here because of Professor Yun too?" Murong Xing asked.

Li Yun Fei sighed. "Yeah, I tried sneaking in over the wall because the gate was closed. But who do I run into? Professor Yun. Now I'm stuck here with you guys."

Zhang Wei grumbled. "Great. Just great. Looks like we're all in this together."

Murong Xing shook his head. "This is going to be a long day. Let's just hope she doesn't make this a regular thing."

Then Zhang Wei handed the bag he was carrying to Li Yun Fei and said, "Xiao Fei, here is your bag. As for some money in the bag, I used it because I was hungry on the way, hehe."

Li Yun Fei took the bag from Zhang Wei and nodded his thanks. "It's fine," he said, acknowledging Zhang Wei's apology for using some of the money.

Then, Zhang Wei asked with an evil smile, "Hey Xiao Fei Muscle man, do you want to teach Professor Yun a lesson for punishing us?"

Murong Xing immediately shook his head and intervened. "Are you a fool? If I had ten lives, I still wouldn't dare to provoke that woman. Don't you remember the senior who made fun of her and ended up bedridden for a week?"

Li Yun Fei chuckled, agreeing with Murong Xing. "Yeah, let's not mess with Professor Yun. We'll just endure this punishment quietly and hope it's a one-time thing."

Zhang Wei sighed in resignation. "Alright, alright. Let's just keep our heads down and get through this."

Li Yun Fei chuckled at Zhang Wei's suggestion. "You know what they say, Zhang Wei, it's better to keep your head down and your knees unbent when it comes to Professor Yun."

Zhang Wei scratched his head sheepishly. "Yeah, you're probably right. But wouldn't it be epic to prank her just once?"

Murong Xing rolled his eyes. "Epic for you, maybe. I prefer to live without getting on her bad side."

Just then, the bell rang, signaling the end of the class. Li Yun Fei stood up, stretching his legs. "Well, we survived. Let's grab some food and forget about this punishment."

The trio made their way to the cafeteria, laughing and joking along the way. But their carefree mood was short-lived when they heard Professor Yun's voice booming through the cafeteria speaker, summoning them to her office. Instantly, their laughter died down, replaced by a sense of dread.

Li Yun Fei exchanged a nervous glance with Zhang Wei and Murong Xing. "Well, it looks like we're in trouble now," he muttered. With heavy hearts, they reluctantly left the cafeteria and made their way to Professor Yun's office, each step feeling heavier than the last. They knew they were in for a scolding, but little did they know just how severe it would be.