Here's the revised version with improved grammar and flow:
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After collecting all the refining materials, Mo Yu began his three-month period of seclusion once again. During these three months, he placed all the materials in the cave where he had previously retreated to break through to the Fighter level and focused solely on refining.
The Divine Black Thunder Spear is a fourth-tier weapon, and the Beast Ring is an advanced storage ring. Both items are extremely valuable and challenging to refine.
In his previous life, Mo Yu might have completed the task in less than a day. However, this time he had to start from scratch, and his innate black thunder was severely damaged. Only his soul power, which was far beyond the same level, helped him in this process. It took much longer to refine these items compared to a second-tier weapon.
In the first two months, Mo Yu concentrated on polishing, tempering, and fusing various materials. He only began the actual forging and refining process a month ago.
The refining process was mentally taxing, but Mo Yu's superb skills allowed him to successfully complete it within a month.
At this time, two items were neatly placed in front of Mo Yu.
On the left was a dark purple storage ring with a faint purple glow, distinguishing it from ordinary low-level storage rings. More importantly, this storage ring had a unique breath of life, as if it could store living things.
This was the Beast Ring that Mo Yu had spent several months refining.
"I'll name you the Demon Frost Beast Ring, to remind me not to forget those two thieves, Mosha and Han Shuang," Mo Yu said, stretching out his hand to hold the Demon Frost Beast Ring. He stroked it slowly while recalling his deep hatred.
The internal space of the Demon Frost Beast Ring, forged from a huge piece of mountain and river stone, was like a small world of its own. Even in the Tianshuang Continent, it would be ranked among the top.
Although Mo Yu didn't need such a large space at the moment, the Demon Frost Beast Ring was much stronger and safer than a low-level storage ring.
After playing with it for a while, Mo Yu's soul power infiltrated the Demon Frost Beast Ring to plant his soul imprint. With Mo Yu's current soul power, even a great fighting master couldn't erase his imprint.
This protective feature was characteristic of advanced storage rings, and the Demon Frost Beast Ring possessed it as well.
Once this step was complete, Mo Yu's mind moved, and the flashing purple light on the Demon Frost Beast Ring disappeared, making it look like an ordinary ring. Mo Yu could now safely wear it on the ring finger of his right hand without fear of it being recognized.
Shifting his gaze, Mo Yu focused on the black spear on his right.
The spear was pitch black and slender, about nine feet long, with a spearhead measuring one foot and three inches. It emitted a faint black lightning glow. Despite standing still, the spear exuded a powerful aura.
Holding the spear in his hand, Mo Yu's demeanor seemed to change drastically. At that moment, he resembled a spear that could pierce through the sky and earth, his aura filled with sharpness and ferocity.
"Mighty Black Thunder Spear, I never thought I'd wield you to conquer the continent again," Mo Yu said, stroking the spear as one would a cherished lover.
"Buzz!"
As if responding to Mo Yu's call, the Mighty Black Thunder Spear emitted a terrifying aura that burst forth from the cave and shot straight into the sky.
"Alright, let me see your power!"
With his hands itching to test the spear, Mo Yu walked out of the cave and approached the mountain stream. A gleam of brilliance flashed in his eyes as he tightly grasped the Mighty Black Thunder Spear with both hands, injecting an astonishing amount of thunder fighting spirit into it.
The brilliant lightning, once extremely dazzling, became more restrained. Instantly, the lightning retracted into the Divine Black Thunder Spear, flowing like a lake of thunder energy at the spear's tip.
"What a thrill!" The familiar sensation made Mo Yu laugh out loud.
With a violent shake of his arm, the long spear pointed diagonally at the sky. Then, the heavy spear fell with a whistling sound. Upon impact with the ground, an incredibly terrifying dark force leaked out, slightly cracking the huge rock beneath Mo Yu's feet.
"The thunderclouds in the sky split!"
A thunderous roar echoed as the power of thunder erupted from the tip of the Mighty Black Thunder Spear like a mountain torrent!
The overwhelming silver-white light, accompanied by a sharp, piercing sonic boom, sliced through space like lightning, shooting straight into the distant mountain stream. Wherever the silver light passed, birds and beasts scattered as if the end of the world had arrived!
"Boom!"
Moments later, an explosion akin to a volcanic eruption occurred, sending a massive cloud of dust and smoke into the air.
Half a quarter of an hour later, as the smoke dissipated and the birds and beasts ceased their cries, the scene came into view. The once steep mountain stream was devastated, resembling broken walls and ruins from Mo Yu's attack. Gravel continued to fall, creating a splashing sound.
Mo Yu had expended all his thunder fighting spirit to execute the Nine Heavens Thunder Cloud Split. He felt as if he were a sponge squeezed dry of water, with a sore and numb pain spreading through his nerves. The blue veins on his arms twitched slightly, a sign of overexertion.
The Nine Heavens Thunder Cloud Split was a spear technique Mo Yu had learned in his previous life along with the Divine Black Thunder Spear. Despite his proficiency from his previous life, it was still a challenge to perform with his current strength as a five-star fighter.
That's right, Mo Yu now had the strength of a five-star fighter.
Thanks to the domineering Tiangang Thunder Body, Mo Yu, previously a two-star peak fighter, had broken through to a three-star fighter in just half a month. During his three months of seclusion refining weapons, he had auctioned several items through the Mittel Auction House.
He used all the gold coins obtained to purchase magic cores. After considerable effort, he acquired nearly twenty magic cores of the thunder and fire series, raising his strength to the five-star fighter level.
Licking his lips, Mo Yu turned his head with difficulty to examine his right arm, which was already red.
Lying exhausted on the cold boulder, Mo Yu's breathing slowly calmed, but the numbness and soreness in his body made him reluctant to move.
With his current strength as a five-star fighter, he could only use the Nine Heavens Thunder Cloud Split once, and afterward, he would be completely drained until his strength recovered.
Mo Yu tilted his head back, squinting lazily at the clouds in the blue sky. A light breeze lifted a strand of black hair, brushing his forehead.
Despite the significant toll on his body, Mo Yu felt immense satisfaction. This move was so powerful that it could only be stopped by a fighting master.
As a trump card, it was perfect.