When He Ao's face emerged from the darkness little by little, a slightly frightened expression slowly appeared on Zaidi's face.

He is just a D-class, and when faced one-on-one with a C-class like He Ao who is so tyrannical that he can kill five strengthening potion users, he has no ability to resist at all.

He suppressed the panic in his heart, took half a step back, and asked cautiously, "When did you come here?"

"I always,"

He Ao still had a calm and natural smile on his face.

The next second, a calm voice sounded behind Zaidi, "Behind you."

Zaidi felt the hairs on the back of his neck stand up one by one, and the cold air rushed down his back to the sky.

In front of him, He Ao's figure had long disappeared.

He turned his head slightly and looked behind him, and He Ao's smiling and calm cheek gradually appeared in his field of vision.

If He Ao had just tried to kill him, he would have been powerless to fight back.

Without hesitation, he activated the syringe on his arm, and the powerful medicine flowed into his body along the bloodstream in an instant.

A faint red glow spread along his body.

He Ao glanced at the syringe in his hand, took two steps back, and quietly stared at the faint light covering his body.

This was the first time he had seen the process of using strengthening potions.

He mobilized his consciousness and looked at Zaidi's body, only to see a powerful red energy flowing down Zaidi's arms to his whole body.

This energy is extremely violent, as if it will destroy everything it encounters, but a certain substance inside it binds its violence like a rein, allowing it to flow smoothly through the lines in the body, and the energy it emits begins to continuously transform.

Zaidi's flesh and blood.

The muscles on his body swelled at a speed visible to the naked eye, breaking his shirt. Thin blood vessels crisscrossed on the bulging skin, making his entire body appear a strange bright red.

His height increased rapidly, and he soon grew into a giant of more than three meters, and his eyes were filled with violent blood red.

All these changes were very slow in He Ao's eyes. He could even observe the details of Zaidi's physical changes, but the actual time spent was very little.

In just one or two seconds, Zaidi expanded from a well-proportioned man to a giant of over three meters.

He was bigger than the captain of the team that came to hunt down He Ao before.

"It seems that you are very arrogant," Zaidi sneered. His voice was like a loud bell, which made people's ears go numb. "When the potion took effect just now, it was the best time for you to kill me. Now you no longer have this chance.

"

The huge strength filling his body supported his confidence. He had not used these strengthening medicines before because he was worried about the side effects.

After having to use it today, he felt that his condition was better than ever before. This feeling of gaining great power and having everything under control was fascinating.

He Ao looked at Zaidi's blood-red eyes. This guy had gradually begun to be controlled by the power in the strengthening potion. He smiled and said slowly,

"Actually, I have always been a law-abiding person. As long as you..."

"Go to hell and obey the law!"

Zaidi laughed loudly and grabbed He Ao with two huge palms.

He Ao, who was interrupted, shook his head slightly. He raised the dagger in his hand, made a sword dance, then raised the sword forward and stabbed Zaidi's thigh, which was where Zaidi's energy converged.

He performed these movements in an orderly manner, and it seemed as if a long time had passed, but in fact the movements were surprisingly fast.

At such a close distance, the sword light pierced forward like running water, easily piercing Zaidi's skin that looked as solid as steel, piercing his muscles, and sinking into his entire leg.

Silky and smooth.

The whole process is like following the path of the wind, integrating with nature.

"how come···"

Zaidi's hands froze when he waved them down, and his body became as stiff as a stone statue. The power that originally supported his huge body was released at this moment and its violent nature was rampant in his body.

This easy blow became his final finale.

boom--

The blood and flesh all over the sky turned into a curtain of rain.

The silver sword light was retracted from the rain curtain, streaking through the sky with a glorious trajectory, and was collected into the interlayer of He Ao's clothes.

Dim yellow street lights illuminated everything.

In this silent night, terror and beauty merge into one.

He Ao knelt down, picked up the long black piece of equipment that had fallen on the ground, and gently swung the blood-red residue off the equipment.

This should be an advanced external storage device, which probably has its own computing core inside, which is not even worse than many computers.

Then he walked to the other side and picked up a large fragment of clothing. There were seven test tube bags on the fragment, which contained six red liquids.

Strengthening potions.

This test tube bag seems to have been specially strengthened and has very good toughness, so it was not directly blown into tiny pieces like other clothes.

He Ao put away these two things and moved forward slowly until the dark night completely engulfed his figure.

——

"dad!"

The moment He Ao opened the door, a large figure rushed forward.

"Okay," He Ao stretched out his hand and rubbed the little head of Aini who was hugging him, "Dad is very dirty, let him clean it up."

"oh."

Aini hugged her carefully for a while before letting go.

"Did anything good happen today? Or do you want something?" He Ao smiled and put away his clothes, "The last time you hugged daddy so enthusiastically, you were only this tall."

He Ao checked the position slightly higher than his knees.

"No way," Aini's face turned red, "I just want to hug you."

"The little girl has grown up and is now shy. Dad will take a bath first."

He Ao smiled and rubbed his daughter's head again, then walked into the back room.

The sound of running water came from the master bedroom bathroom.

"Your dad is back?"

The door to the second bedroom opened and Roger raised his head and glanced at Aine.

"Um."

Aini nodded.

"Have you finished your homework?"

Roger asked casually.

Aini has a big head.

She quickly ran to her small bedroom, "I'll write right away."

······

Ten minutes later, He Ao took a shower, changed clothes, and walked out of the back room with his previous coat.

"How was the harvest?"

Roger sat on the sofa and looked at him.

"good."

He Ao dropped his coat with numerous test tubes on the coffee table.

He lit a cigarette and held it in his mouth. "Six C-level strengthening potions, thirteen D-level strengthening potions, and nineteen life potions."

Then he took out a long black electronic device from his pocket and threw it on the coffee table, "along with all the information of the institute."

Although the device Zaidi brought had security verification, it was far inferior to the supercomputer. It had been cracked by Eve when He Ao came back, but He Ao had not read the contents yet.

"It seems you have quite a lot of 'trophies' this time,"

Roger opened his clothes and took out a C-level strengthening potion from inside, "Is this the potion you mentioned that can directly strengthen ordinary people or low-level extraordinary beings into C-level ones?"

He pulled out the cork of the potion and fanned it in front of the test tube. "It smells like wild animals, which is interesting."

"To be precise, this is the physical evidence I found in the process of my bravery to investigate evil forces,"

He Ao held a cigarette in his mouth and looked at Roger with a smile, "Can you figure out how to make this strengthening potion?"

"It's difficult," Roger shook his head. "This kind of special extraordinary potion usually has a strict mixing sequence and proportion. It's difficult to restore the formula with just one finished product. However, I can try to study its ingredients.

Is this useful to you?"

"Maybe I can use it if I have a chance," He Ao said noncommittally, "Finding out what this thing is can help me avoid some risks."

"This kind of thing that forcibly enhances strength usually has extremely serious side effects," Roger stared at the red liquid in the test tube, thoughtfully.

"I'll try my best to analyze it for you. I'm also curious about how Qunxing Pharmaceutical does it."
To be continued...