Kill one monster, stack one poison, and I alone will poison my way across the world!

Day 15.

The air in the Immortal Item Training Room was filled with a strong smell of nutrient solution and sweat.

Su Chen's eyes were bloodshot and sunken. His once neat robes now hung on his body like dried pickled vegetables.

If he were in his previous life, he would definitely be regarded as a top-tier player who would stay up all night in an internet cafe for half a month straight.

But the almost pathological excitement in his eyes was frighteningly bright.

"All Poisons Explode!"

hum-

Despite the pressure of ten times the mental force, Su Chen didn't even blink.

Half a month of grueling training, with only five hours of sleep a day, had pushed his mental resilience to an inhuman level.

He did not point at the wooden stake.

In his mind, the original single-line magic circuit of [Ten Thousand Poisons Explosion] had been forcibly dismantled into countless tiny branches.

He closed his eyes.

He was imagining.

Imagine that the surroundings are not an empty practice room, but rather a room teeming with countless abyssal monsters.

Those monsters were covered in layers of [Deadly Poison], each layer of poison like a landmine waiting to be detonated.

The magic flowed through those tiny branches, pouring into the surrounding space like a flood bursting its banks.

Snapped!

The energy whip in Chu Ying's hand crackled near Su Chen's ear.

"Magic node overload! What are you thinking? Is your brain boiling? Forcibly expanding a single-target detonation into an area-of-effect detonation will burn through your mental core! Retract! Tie your runaway magic back like a dog on a leash!"

Her cold curses echoed in the practice room, but Su Chen ignored them.

It cannot be contained.

Once it's converged, it can only be a single entity.

Su Chen gritted his teeth and forcibly forced the last bit of his mental energy into the core circuit.

"burst!"

Boom!!!

The entire Immortal Rank training room trembled violently.

Centered on Su Chen, the space within a radius of thirty meters was instantly enveloped by a dense, almost impenetrable, dark green poisonous fog.

All the black iron stakes within the area simultaneously emitted a piercing alarm sound.

[Note: Progress of the Poisonous Explosion skill form reconstruction: 100%]

[Notification: Skill upgrade successful.]

As the poisonous fog dissipated, Su Chen collapsed to his knees, panting heavily.

He glanced at the updated skill descriptions on the panel, but his brows furrowed slightly.

"Still unable to achieve completely passive triggering...?"

Su Chen was panting heavily, his voice hoarse, and he muttered something under his breath.

He glanced at the cooldown time column; the original 15-second CD had been reduced to 10 seconds.

"After working myself to the bone for half a month, I've only achieved two evolutionary directions."

Su Chen curled his lip, his tone filled with undisguised disdain.

Standing to the side, Hatsuyaki pushed up her gold-rimmed glasses, her knuckles whitening slightly as she gripped the whip.

Her cold, data-driven brain experienced a brief pause in its computing power.

In just half a month, they transformed a single-target burst skill into an area-of-effect (AOE) skill and reduced its cooldown from 15 seconds to 10 seconds.

This level of reconstruction, if applied to any professional, would be something they could boast about for a lifetime.

And this guy, who's only level 26, is actually complaining about it.

"Your greed is as disgusting as your intelligence."

Chu Ying spoke coldly, "The failure to forcibly remove the guiding circuit indicates that your core skill is not strong enough to support complete passivity. The fact that you were able to turn it into a group skill is already the greatest mercy the system has shown to your inferior genes."

"Stop playing dead, you still have one skill to fix."

Chu Ying raised her foot and nudged Su Chen's shoulder with the tip of her high heel. "Get up."

Su Chen got up from the ground and drank a bottle of medicine.

Okay, [Ten Thousand Poisons Explosion] is barely passable.

Next up is this thing.

He set his sights on the Corrosive Serpent Guard.

The flaws in this skill are too obvious.

With fixed turrets, these snake guards become useless once the enemy moves out of their 15-meter firing range.

In the past week, apart from modifying [Ten Thousand Poisons Explosion], Su Chen spent all his remaining time working on these immobile snakes.

"Corrosive Serpent Guard".

Su Chen raised his hand.

Mana was draining away like crazy.

Pfft—

One after another, dark green venomous snakes emerged from the magic circle on the ground.

But this time, they didn't stay in place like wooden stakes.

Su Chen severed the underlying logic of the skill regarding "fixed anchor points" and instead directly connected his mental power to the nerve nodes of each snake guard.

"Get moving."

Following Su Chen's command, dozens of corrosive snake guards began to roam the floor of the training room.

Although the movements were still a bit stiff, it did break the limitations of the "fixed turret".

"not enough!"

Hatsuyaki lashed out with her whip again. "They move slower than an eighty-year-old woman! And their attack range? Are you planning to let them crawl over and bite you?"

Su Chen ignored Chu Ying's taunts.

He closed his eyes and divided his mental energy into two streams.

One force sustained the snake guard's movement, while the other force frantically compressed the venom ball in the snake guard's mouth.

Since the normal attack range is only 15 meters, I'll add a charging mechanism.

Compress the venom to its maximum, then fire it like a sniper rifle!

hiss--

A snake guard at the forefront suddenly raised its upper body, and a blinding green light began to gather in its mouth.

one second.

two seconds.

three seconds.

The Venom Sphere glowed brighter and brighter, and the surrounding air hissed and corroded due to the high concentration of toxins.

"emission."

call out!

A dark green venomous ray instantly pierced through the entire training room, accurately hitting a spare wooden stake a hundred meters away.

A fist-sized pit was directly melted into the wooden stake.

[Note: Progress of Corrosive Serpent Guard skill form redesign: 100%]

[Notification: Skill upgrade successful.]

Two consecutive high-intensity skill reconstructions completely drained Su Chen's last bit of mental energy.

His vision went black, and he fell straight backward.

This time, Hatsuyaki didn't mock him or whip him.

Just as Su Chen was about to crash to the ground, a gentle force caught him.

A series of golden system notification sounds echoed above the practice room.

【Ding! 】

[A permanent change to the skill's form has been detected, resulting in a significant overflow of proficiency.]

The skill [Poisonous Explosion] has been upgraded to LV2.

The skill "Corrosive Serpent Guard" has been upgraded to LV2.