My Ultimate Sign-in System Made Me Invincible

The White Horned Thunder Python was a Rank 4 spirit beast with strength equal to a Nascent Soul cultivator. Even a Soul Formation expert would find it hard to defeat. It lived deep in the inner region of the Thousand Mist Forest.

Its thunder ability was something almost every human cultivator wanted, and its blood was extremely valuable. Alchemists, formation masters, and high-level blacksmiths all fought for it. If even a few drops appeared in a high-level auction, people from across the kingdom would rush to buy it.

So the amount inside Liam’s container... was something beyond what anyone in Blackstone City should ever touch.

Master Han understood this very well. Even as a Qi Refinement cultivator, he could feel the pressure leaking out of the container the moment it appeared. That alone told him the blood inside wasn’t small, and it wasn’t low quality either.

He stared at Liam without blinking. He couldn’t understand how someone so young could get something like this. He didn’t know what kind of person Liam truly was... or what kind of identity he was hiding.

The forge room was silent. Only the crackling heat of the furnace filled the air.

Liam seemed unaware of Master Han’s thought, as his own thoughts were focused on the spear and crafting it. He wonder if he would be able to handle something like that. He can’t wait to find out.

He held the freshly cast and still hot spear metal, and placed it on the anvil. The metal glowed red, but he didn’t rush to strike it because he needed to fuse the blood first.

He turned toward the container.

Master Han swallowed hard and took one more step back when he saw Liam’s action.

When Liam opened the container..., it was like the world changed.

When Liam opened the container, he saw a lightning flash streaked above the liquid surface. The thin lines of blue-white energy crawled across the surface like small serpents.

But Master Han and Luo saw something else.

For a moment—just a blink—they saw the shape of a beast. A massive blue-white serpent with white scales and lightning coiling around its body. Its mouth opened silently and its eyes glowed with deep hatred. Its fangs looked ready to tear them apart. 𝚏𝗿𝗲𝐞𝚠𝕖𝐛𝗻𝗼𝐯𝕖𝚕.𝚌𝗼𝗺

Master Han and Luo knew that it wasn’t real. And that it was an illusion born from the python’s blood. A spiritual instinct left behind by am extremely powerful creature.

But to them, it felt real enough.

Their faces were drained of all color at the same time. Their bodies went rigid, like prey caught in front of a predator. They couldn’t breathe. They couldn’t blink and their knees almost gave way.

Then the illusion vanished but the mental terror that it has caused them stayed.

Liam didn’t see the terror on their faces, as he was only looking at the blood, studying the way the lightning danced above it.

"So this is lightning essence," he muttered.

He dipped a finger into the container without hesitation, causing Master Han to choke out a sound. Luo’s legs collapsed and he fell onto the bench behind him.

Liam lifted his finger, with a thick drop of deep blue blood clung to the tip. Lightning streaks crawled across it and bit at Liam’s skin.

Surprisingly and quite unsurprisingly at the same time, to Liam, the lightning biting at his skin only felt like warm static. But to Master Han and Luo, it looked like suicide.

Liam turned back to the spear metal and let the drop fall.

The moment the blood touched the glowing metal, a violent crackle tore through the forge.

Lightning burst across the spear metal, wrapping around it in wild streaks. The entire blade vibrated like it was alive. Sparks shot out in thin arcs. The heat of the furnace mixed with the sharp sting of lightning essence.

Master Han stumbled back and Luo shielded his face.

Liam dragged the spear metal into place and grabbed the hammer. He lifted it and struck.

CLANG!!

The lightning flared bright, as the blood tried to reject the metal. The spear blade shook.

Liam narrowed his eyes and the next strike came down with a corrected angle.

CLANG!!

The lightning steadied a little. Still violent... a bit more controlled.

"Good," Liam said and he struck again.

CLANG!

The lightning weakened and he struck again.

CLANG!

The lightning strengthened. He paused, then nodded to himself in understanding.

"So it changes with rhythm," he said as he adjusted his grip and continued.

Master Han stared with his heart beating hard in his chest. Every strike Liam made sent shockwaves through the room. The sparks leaped across the floor and the lightning aura washed over everything in waves.

But Liam remained steady, calm and focused on the task at hand.

He hammered the blade again and again, feeling how the lightning pulsed with the metal. He could sense the rejection. The metal didn’t want to hold the essence and the blood wanted to escape. The lightning wanted to erupt and tear the forge apart.

But he forced them together with each of his hammer strikes. Each hit was loud and carried a weight that felt like it cracked the air.

Master Han watched and felt his legs go numb. Every instinct in his body screamed that forging with this material should be impossible for someone in the anyone, but seeing Liam do it so effortlessly was changing his worldview in real-time.

The spear metal glowed brighter with each hammer strike. And the lightning circling it grew even wilder.

A fork of energy shot out and hit the wall and a black scorch mark appeared instantly.

Another arc struck the ground and tore a crack through the tiles.

A third shot toward Master Han, but Liam moved his hand slightly and the lightning bent away from him, dispersing into the air.

Luo yelped and hid behind a tool rack.

Liam kept hammering and every time the blood fused deeper, the metal hissed. It reacted to the lightning essence like water touching lava. Steam rose in white clouds and sparks shot out with loud pops.

He dipped the metal into the furnace again. Flames roared up high as the lightning inside clashed with the fire.

The two elements hated each other. The fire of the furnace surged but the lightning resisted. The metal strained under the fighting forces of them both.

Liam watched the mix and nodded.

"Stop fighting and blend," He said, as he reached into the flames and grabbed the spear metal again.

He was expecting something to had happened that would make him to continue crafting the spear, but so far, he can say that everything’s going smoothly.

Liam carried the glowing spear head to the anvil and continued the fusion process. He hammered the core, the edges and the spine.

Each hit sparked with blue-white arcs, as lightning sank deeper with each strike but also tried to jump out of the metal. It coiled and surged, exploding against Liam’s fingers, yet didn’t hurt him.

He molded the blade’s curve, thinned the point and adjusted the balance.

Hammering... Heating... Molding... The sequence continued for what seems like eternity and the work turned harder with each step.

The lightning essence became violent, as it pushed back. It resisted to take on the shape. It wanted a natural form, not a spear.

But Liam forced it. Another strike came down on the spear’s blade, causing another explosion of sparks.

Luo covered his ears and Master Han clenched his fists, staring with a face full of shock, fear, and deep respect.

"Is he forcing thunder itself to submit...?" Master Han whispered.

Liam didn’t hear him. He dipped the half-shaped blade in the quenching trough. The water exploded upward as blue sparks erupted inside the barrel and steam filled the room.

He lifted the blade again. Its surface flickered, as lightning streaks crawled under the metal skin like veins. But the core wasn’t stable yet.

He placed it back on the anvil and he hammered again.

CLANG!!

CLANG!!

CLANG!!

The forging table cracked under his feet.

Master Han took another step back, with sweat rolling down his forehead.

Liam’s expression didn’t change. He struck again, and again and again, until the lightning started sinking into the metal smoothly.

The rejection lessened and the trembling stopped. The bright eruption inside the metal dimmed.

The essence was almost fully fused but the final stage was the hardest.

The moment the lightning settled, the metal would choose:

Accept the fusion or explode from conflict and destroy itself.

Liam knew it and Master Han knew it.

This was the dangerous part.

Liam heated the blade again.

"Master..." Luo whispered, trembling.

Master Han didn’t answer, as he held his breath.

Liam lifted the glowing spear blade and placed it onto the anvil one last time. The weight of the fusion pressed on the entire forge like a living storm.

Liam tightened his grip on the hammer.

The spear was almost complete. He only needed one more sequence of strikes. He raised the hammer.

The lightning surged violently inside the blade and he brought the hammer down—

CLANG—!!

The strike hit dead center and lightning burst out.

Liam raised the hammer again, and the lightning essence inside the spear core twisted sharply, reacting in a way he didn’t expect.

It was violent. Too violent. It was still trying to break free.

Liam saw it instantly and he understood the storm brewing inside the blade. He lifted the hammer one more time.

This will be the final strike. If he hit correctly, the spear would live. If not, the whole forge might explode.

Lightning curled across the metal like a beast baring its fangs.

Liam tightened his grip, his eyes narrowed and he swung down decisively.