[You have entered a state of mild poisoning, losing 3 health points per second for sixty seconds.]

As long as he didn't leave the poisonous gas range, the poisoned state would persist and continue to deepen. If the Hidden Demon continued to attack aggressively, they would have to bear the damage from the poisonous gas together.

Han Xiao was confident and unafraid. He possessed the [Low-Level Tenacious Life] talent, with over 2,000 health points, and wasn't afraid of attrition. Bold and decisive, he used unorthodox methods to drag the battlefield into an environment favorable to him, breaking the enemy's stealth advantage!

The current situation was a stalemate. The Hidden Demon couldn't do anything to him, and he couldn't hit the Hidden Demon either.

"Although I'm invincible, I can't do anything to him either. If this continues, the Hidden Demon will definitely retreat, and the final result will still be a draw."

Towards enemies who threatened his life, Han Xiao's desire to kill was unwavering. After careful consideration, he decisively abandoned the advantageous environment he had created, activated his Hover-boots, and ran away. As expected, the Hidden Demon chased after him as he had anticipated.

Han Xiao pretended to control the armor a bit slower, letting the Hidden Demon see an opening and viciously grab his back. The five claw marks that penetrated deep into his flesh were searingly painful, but he remained expressionless. This action was to test the Hidden Demon's attack power on his body.

[You have been attacked by the Hidden Demon (lv44). You lost 37 health points.]

"A single attack can deal about forty points of damage, and the attack frequency is very high. If I didn't have the Magnetic Control Armor, my health would be completely depleted in just ten seconds!"

Han Xiao's mood was heavy. He guessed that the Hidden Demon was the strong enemy from the fifth loop mission, and that he might not be the first target. Other assassins must have already been killed.

He estimated the Hidden Demon's pursuit speed by constantly adjusting the speed of his Hover-boots.

"If I keep the output of the Hover-boots at medium power, it's just the right speed for the Hidden Demon to catch up easily, but not so easily that it seems effortless. I can give it a try!"

A new plan formed in his mind. Han Xiao immediately turned and slid towards the airport, with the Hidden Demon chasing behind him.

Fortunately, it was dawn, and the streets were deserted. It wasn't time for work yet, or Han Xiao would have been stuck on the road.

He took out his phone, quickly dialed Antonov's number, asked him to transport the Second Generation Ranger over, then hung up and began to concentrate on "fishing."

Using himself as bait was a technical skill. If he made "I have a trump card" too obvious and let the enemy notice, they wouldn't be fooled. It was like playing a MOBA game. When you're laning, if you suddenly move forward, people know you're going to harass them or that there's a jungler behind you.

The chase lasted for several minutes. The sense of crisis pressing down on Han Xiao's heart suddenly disappeared. He immediately stopped his Hover-boots and vigilantly scanned his surroundings, finally confirming that the Hidden Demon had slipped away and hadn't stepped into his trap.

The Hidden Demon was very vigilant. He had originally planned to retreat when Han Xiao released the poisonous gas, but Han Xiao took the initiative to abandon the advantageous environment, making the Hidden Demon think that Han Xiao couldn't withstand the effects of the poisonous gas either, so he chased after him again.

But the Hidden Demon quickly felt that something was wrong. Although Han Xiao didn't reveal any flaws, he had a gut feeling that it was very dangerous, so he decisively retreated, abandoning the assassination, which was very decisive.

"He's too vigilant." Han Xiao was slightly disappointed, but he quickly got rid of this emotion. If the Hidden Demon was so easy to deal with, he wouldn't be on the list of the most difficult to kill.

You say Black Spider is easy to deal with? Well, although he was caught and taken to Grim Reaper Island, he's still not dead yet.

This short but dangerous battle exposed some problems. Facing enemies above level 40, whether they were agile attackers or tanks, the power of firearms seemed insufficient. The main reason was that he often couldn't hit them, and he didn't have any effective control skills.

The problem Han Xiao was considering was the awkwardness of the Mechanic class in Version 1.0. Ordinary light gunpowder weapons had limited lethality against superhumans at level 50 or 60. Various explosive bombs, missiles, and multi-barreled machine guns had enough attack power, but it was not easy to hit superhumans of this level unless traps were set up in advance.

Electromagnetic Gauss weaponry was the next generation of weapon technology. Whether it was rate of fire or power, there was a huge improvement, which perfectly met Han Xiao's needs. Moreover, the muzzle velocity of electromagnetic kinetic energy weapons was higher, greatly increasing the difficulty for enemies to dodge.

However, to manufacture regular, complete, and stable lethal electromagnetic kinetic energy weapons, one must learn advanced electromagnetics. Advanced knowledge on Aquamarine Star was strictly controlled.

"If I want to make electromagnetic firearms now, I can only try to create my own blueprints. The principle of portable electromagnetic firearms is not very profound. I can master it myself if basic electromagnetics is raised to level five, but turning it into a physical object requires a lot of fine-tuning, which is very difficult. If I want to reduce research time, it would be best to have a direction to learn from, such as getting a lot of other types of electromagnetic blueprints, and then comparing and summarizing..."

Han Xiao frowned and pondered.

Before long, Antonov drove up in a truck, looked around, and asked in confusion, "Where's the enemy you mentioned?"

"Ran away."

Han Xiao said concisely, jumped into the truck directly, and said, "Go to the plane first. I need to repair my equipment and try out a new idea."

"Are you using me as a driver?"

Antonov said helplessly, driving Han Xiao to the airport.

...

The battle between Han Xiao and the Hidden Demon was not a small disturbance. Bureau 13 investigated the surveillance and discovered his tracks, so they quickly reported it.

"A sniper is not afraid of the Hidden Demon's assassination and even forced the Hidden Demon to retreat?"

Di Su Su was surprised, thinking of when she entered the River Valley Manor, this Mr. Black made her feel very dangerous, and his strength was indeed extraordinary.

Benny's eyes lit up, a little surprised.

"Where is he now?"

"He has some relationship with the Farrian Group and is staying on Farrian's transport plane at the airport."

"He should be repairing his equipment." Wang Yuan understood and said, "Don't summon him yet. Moran, please have your people pass on a message to Mr. Black, asking him to return to River Valley Manor before tomorrow morning."

"Okay." Mo Ran nodded.

Next to her was Golden Fox, who had already been summoned. At this time, she was looking scared. Mr. Black was the fourth target, and she was the fifth. Fortunately, Mr. Black repelled the Hidden Demon, allowing her to escape.

Golden Fox didn't think she could survive the Hidden Demon's assassination.

"He indirectly saved my life."

Golden Fox bit her lip. Mr. Black was mysterious and powerful, everything was good, but his tastes were too heavy.

...

In the workshop of the military transport plane, Han Xiao was familiar with repairing the Magnetic Control Armor, and then began to consider the manufacturing of electromagnetic kinetic energy firearms. The style was best to be a sniper rifle, which could maximize the power in coordination with his sniping ability.

He had seven potential points. Han Xiao spent five points to upgrade [Basic Electromagnetics], [Basic Weaponry], and [Basic Energy Theory] to the full level of five.

Immediately afterwards, Han Xiao used [Basic Electromagnetics] as the core to form various knowledge combinations and create various electromagnetic blueprints. He didn't seek to fuse useful blueprints, but only to conceive the practical applications of various blueprints. Each knowledge combination was tried at most twice, using less experience to obtain more blueprints.

A large pile of electromagnetic blueprints came into his hands, and his head was a little swollen. Han Xiao rubbed his temples to relieve mental fatigue and thought, "That's enough, I can try to create my own."

Farrian didn't have material channels in White Dove City. Han Xiao himself carried electromagnetic parts and materials. Although there were not many, they could be disassembled and restored into parts after a failure, and reused. Of course, some one-time parts would be consumed each time, and the recycling rate was about 80%.

Han Xiao predicted that without dozens of failed attempts as a foundation, it would be difficult to make a stable electromagnetic kinetic energy firearm.

"If I pursue success, I can only lower the standard and make a defective version of the electromagnetic kinetic energy firearm, with reduced power and parameters..."

Han Xiao pondered, and finally decided to be stable and make an "experimental product" or "defective version" first, not to be too ambitious.