Han Li gently stretched out his palm, and the piece of Langxian Yun Stone in his palm slowly flew into the silver flames, enveloped by a wisp of Immortal Spiritual Power.

The silver flames flickered a few times, enveloping the fist-sized white stone and slowly burning it.

However, as time passed, the white stone remained unchanged, maintaining its original state.

Han Li's expression remained the same as he formed a hand seal and chanted.

Around the black stone fire pit, circles of crimson light suddenly lit up, and crude and ancient runes emerged, jumping up and down.

After the runes lit up, the silver flames in the pit surged, enveloped by a layer of crimson light. The firepower did not change significantly, but a strange fluctuation was added.

With the appearance of this fluctuation, the Langxian Yun Stone finally underwent a slight change.

After a series of "sizzling" sounds, it gradually melted within the silver flames, and drops of milky white liquid like wax flowed out, suspended in the flames.

An extremely rich sandalwood aroma instantly filled the entire secret room.

Seeing this, Han Li quickly retracted his outstretched palm. The Langxian Yun Stone, which had completely melted into a liquid state, immediately flew out of the flames, enveloped by his Immortal Spiritual Power.

His other hand reached out, holding a black stone bottle covered with fiery red纹路 in his palm, receiving the Langxian Stone liquid.

As the milky white stone liquid flowed into the mouth of the bottle, a circle of符纹 immediately lit up on the bottle, and the entire bottle became as hot as a red-hot iron block.

Han Li shrouded his hand in a layer of azure light, sealed the bottle, and placed it on a stone table to the side.

Then, with another wave of his hand, a piece of Huwen Jing Gold floated up and fell onto the fire pit.

This time, he did not form a hand seal to activate the formation on the fire pit, but turned and sat cross-legged on a half-foot-high stone platform in the center of the cave, allowing the silver flames of the Essence Flame Firebird to melt the Essence Gold on its own.

Under the scorching flames, the petal-shaped patterns on the surface of the Huwen Jing Gold lit up with赤金 light, contrasting with the silver flames, but it still showed no signs of melting.

Han Li merely glanced at it, then closed his eyes and began to regulate his breathing, no longer paying attention.

Seven days and seven nights later.

In the fire pit, the silver flames were still burning fiercely. The seemingly indestructible Essence Gold had completely turned crimson, and it was like a melting glacier, with drops of golden liquid dripping down.

Below it, a black stone bottle, twice the size of the previous one, was placed to catch the golden liquid, drop by drop.

Another full day passed before the piece of Huwen Jing Gold was completely melted.

Han Li opened his eyes, walked forward, put away the black stone bottle, and then took another piece of Huwen Jing Gold from a distance, throwing it into the fire pit…

Three months later.

Inside the mountain cave, Han Li stood beside the fire pit, holding a leather book in one hand, frowning and looking intently at it, while the other hand gestured back and forth in the air.

On the stone platform beside him, thousands of yellow paper sheets were piled messily, each with strange and twisted 纹路 drawn on them.

The纹路 drawn on the lower pages were thicker and more chaotic, while the lines drawn on the upper pages were finer and more delicate.

On the top four pages, the纹路 were already very dense, looking like four round flowers, very exquisite.

In the upper left corner of the stone platform, where the papers were piled, were placed a dozen goose-necked bottles of different sizes and materials, containing all the spirit liquids needed for refining the sword.

During this time, in addition to refining various spirit liquids, Han Li spent most of his time studying the Melting Gold Sword Refinement Technique recorded in the leather book, and practicing drawing the formation符纹 recorded in the book on paper.

Although he had drawn them thousands of times, he was still not satisfied with the符纹 he could currently draw, feeling that there was something missing, so he had not started refining the sword.

After a while, a "snap" sound was heard.

Han Li closed the book, closed his eyes, and stood motionless in place as if lost in thought, only his right middle and index fingers were brought together, moving slightly by his side, as if practicing drawing符 in the air.

After an unknown amount of time, he seemed to have a sudden inspiration, opened his eyes abruptly, turned around and strode to the fire pit.

He brought his fingers together, and golden light shone brightly on his palm, with layers of golden scales appearing, covering his two fingers.

He bent down, squatted beside the fire pit, and thrust his fingers straight into the rock that made up the left side of the fire pit.

He closed his eyes and concentrated, clearing his mind of all distractions, feeling the spiritual meaning contained in the符纹, and Immortal Spiritual Power flowed from his fingertips, engraving the rock.

At first, his fingers moved extremely slowly, taking a long time to move even an inch, but gradually his speed increased. In the end, he moved like a dragon and snake, completing an entire符纹 in one go.

Its shape was exactly the same as one of the patterns drawn on the four sheets of paper, but it was several times larger, extending downward from the stone platform, with most of it engraved on the ground.

After engraving the first formation map, Han Li paused for a moment, then slowly exhaled and came to the right side of the fire pit to continue concentrating and engraving…

After a long while, Han Li straightened up and slowly opened his eyes. The formation maps around the fire pit had been completed. Although they were in different positions, they were interconnected, looking like a cohesive whole, full of spiritual meaning.

He nodded in satisfaction, rubbed his hands in front of him, and the Essence Flame Firebird flashed out of his body, flying into the fire pit and turning into a silver flame, burning fiercely.

As the silver flames lit up, the entire cave began to become hot.

Han Li waved his palm, and a series of azure lights rustled out. After circling in mid-air, the azure light converged, revealing seventy-two Azure Bamboo Bee Cloud Swords, neatly suspended in front of him, their bodies flashing with azure light, emitting阵阵 humming sounds.

"Go."

Han Li spoke softly and waved his sleeves sharply.

All the Azure Bamboo Bee Cloud Swords immediately swept backward, retreating into the fire pit behind.

A sharp whistling sound came from the silver flames, and the raging silver flames surged out, instantly engulfing the seventy-two Azure Bamboo Bee Cloud Swords.

Han Li then sat down cross-legged, formed a strange hand seal with his fingers, and chanted silently.

As the chanting continued,阵阵 "嗡嗡" sounds came from the formations engraved around the fire pit. Four thick golden beams of light shot out diagonally from the surroundings, converging in the center of the fire pit and turning into a golden light curtain, covering the Azure Bamboo Bee Cloud Swords and the Essence Flame Firebird.

After a moment, Han Li separated his ten fingers, bent them slightly in front of him, and hooked them upward.

The sounds of bottle stoppers being pulled out sounded at the same time, and various colored spirit liquids flew out from the dozen goose-necked bottles, surging into the golden light curtain.

Through the golden light curtain, Han Li could clearly see that the melted Huwen Jing Gold dispersed on its own, covering the Azure Bamboo Bee Cloud Swords, completely enveloping each of them.

Immediately afterward, several other spirit liquids were also divided into seventy-two portions, dripping into the melted Huwen Jing Gold wrapped around the Bee Cloud Swords.

Seeing this, Han Li closed his eyes again, and his Divine Sense suddenly opened, throwing his mind into the golden light curtain.

The golden light curtain trembled slightly, and the light on its surface shone brightly, instantly turning into five colors.

At the same time,阵阵 light also began to shine on the seventy-two Azure Bamboo Bee Cloud Swords, as if they were hung with rainbows, becoming colorful.

After an hour, Han Li opened his eyes again, opened his mouth, and a wisp of Nascent Soul Fire spewed out, hitting the five-colored light curtain. Without any resistance, it merged directly with the silver flames.

"Hoo…"

The two flames merged, instantly rising up, turning into a pillar of flame, covering all the Azure Bamboo Bee Cloud Swords.

At this moment, a sudden change occurred!

The dozen or so flying swords, as if unable to withstand the burning of the fused flames, began to struggle frantically, their sword Qi overflowing, cutting in all directions.

Seeing this, Han Li's majestic Divine Sense surged out, instantly connecting closely with each flying sword, suppressing them at the first moment.

"I didn't expect that there were still some stubborn sword essences that were not completely fused, hidden so deep…" Han Li sighed softly in his mouth, but he was somewhat relieved in his heart.

Fortunately, these sword essences acted up at this time. If it were when he was fighting someone, even a moment of loss of control of the Azure Bamboo Bee Cloud Sword could have caused irreparable consequences.

In the raging flames, on the Azure Bamboo Bee Cloud Swords wrapped in various spirit liquids,团团 unfused sword essences burst out from the sword bodies, collapsing directly.

However, the spiritual power they transformed into was not lost, but was reabsorbed by the flying swords.

Seeing this, Han Li did not relax in the slightest, and still carefully controlled the fusion of the Nascent Soul Fire and the silver flames, constantly burning the seventy-two flying swords. The colors of the rainbow on the flying swords gradually faded and became blurred…

A full forty-nine days later.

Inside the golden light curtain above the fire pit, the seventy-two flying swords were as white as jade, as transparent as ice, looking almost transparent.

Compared to before, the sword tips of all the flying swords seemed to have been lengthened by an inch, and the sword blades had also become much wider.

Han Li looked expressionlessly at the somewhat unfamiliar Azure Bamboo Bee Cloud Swords, and waved his palm again.

On the stone platform, the stopper of the last black stone bottle flew out on its own, and the milky white spirit liquid inside floated up, entered the golden light curtain, and was divided into seventy-two drops, dripping onto each flying sword.

"Drip…"

This soft sound was like spring rain, like灵泉 splashing, like withered trees sprouting.

All the flying swords trembled at the same time, and then the spiritual紋路 on their surfaces lit up suddenly, and golden light shone brightly at the same time. Countless golden lightning threads shot out, intersecting with each other, like a small forest of lightning, constantly emitting "噼啪" sounds.

If it weren't for the outer layer of golden light curtain blocking them, these lightnings would have overflowed and shattered this mountain cave into pieces.