Only after becoming emperor did he realize he was in a fantasy world of immortal cultivation.

A moment later, Lin Yuan put the purified liquid of yellow diamond crystal and black jade iron into the refining furnace.

The furnace immediately emitted several "popping" sounds.

Lin Yuan's gaze shifted to the bottom of the furnace, where the Earth Core Fire, like the setting sun, illuminated the earth, glowing blood red and translucent.

He infused it with a magical incantation.

The fire shrank considerably in an instant.

The noise from the furnace also subsided.

After simmering the fire for a short while, Lin Yuan seized the opportunity and, with his hands moving like butterflies flitting among flowers, instantly unleashed dozens of complex hand seals.

The two clumps of spiritual liquid collided violently in the furnace.

"melt!"

Lin Yuan cast a spell on the furnace.

The yellow and white spiritual liquids immediately intertwined and permeated intensely in the furnace, emitting a slight hum.

Gradually, a new alloy, with its understated brilliance, dark gold hue, and the combined strength of metal and the toughness of jade, slowly took shape in the furnace, radiating a chillingly sharp aura.

The embryo of the flying sword is complete!

Upon seeing this, Lin Yuan then used his ten fingers as if playing a zither, drawing afterimages in front of him. His pure spiritual power surged out, transforming into dozens of visible cyan spiritual incantations, which he then cast into the refining furnace.

With this enhancement, the true fire within the furnace suddenly changed its intensity. It was no longer a violent, scorching flame, but rather, as if controlling an extension of its own arm, it tightly enveloped the sword embryo, using it as its skeleton and shaping it. Under the pressure of the spiritual fire, which seemed to have been forged and refined a thousand times, the liquid sword embryo obediently extended and narrowed, and the sword tip slowly emerged from the firelight, its cold gleam flashing.

Just as the sword shape was initially formed, Lin Yuan changed his technique again, from complex to simple. He pointed his right hand with fingers together like a sword, pointing at the coiled dragon lantern floating to the side from a distance.

"Spiritual runes as the skeleton, weapon fire as the blade, go!"

The Panlong Lantern responded with a long chant, and a wisp of its flame suddenly split off. It was no longer an invisible fire, but condensed into a sharp, golden "spirit-patterned brush." ​​This brush was made of pure fire spirit power, and guided by the spiritual power at Lin Yuan's fingertips, it shot into the furnace like a dragon and touched the newly formed sword.

"laugh--"

Where the golden pen falls, wisps of blue smoke rise.

With each stroke of the brush, complex and profound "void-breaking runes" were precisely and swiftly imprinted onto the spine of the sword.

The entire process relied entirely on Lin Yuan's exquisite control over his spiritual power and the fire of his weapon, using his qi to guide the brush and inscribing the array with the brush. With each stroke, a circle of transparent ripples spread around the flying sword, and the essence of speed immediately condensed.

Immediately afterwards, Lin Yuan pressed down with his left hand, and the output of spiritual power turned into a heavy and solid one. The strokes of the golden pen also became deep and powerful, and he began to outline several more ancient "sharp gold array symbols" on the core of the sword guard and spine.

This time, the friction between the brush tip and the sword blank produced a truly clear and resonant sound, like metal striking metal. Sparks flew everywhere, and the sharp energy of the sword rose from the furnace where the symbol was formed.

As the final stroke of the array perfectly aligned with the beginning, the entire flying sword suddenly erupted with dazzling golden light, swallowing and concealing all the patterns.

Lin Yuan knew that he had succeeded, and with a flick of his sleeve, the fire in the furnace went out.

He pointed with his fingers and shouted, "The vessel is complete, bring it forth!"

The golden light faded, leaving a long sword hanging silently in the air.

With its simple design, the mysterious patterns on the dark gold sword can only be glimpsed when light passes over it.

It no longer needed the support of flames; it exuded its own awe-inspiring power, its sharpness permeating the entire weapon-forging room.

Lin Yuan reached out, and the flying sword let out a soft, obedient hum as it landed steadily in his palm.

One night passed.

The sword was finally forged.

Lin Yuan looked at the long sword in his hand, a satisfied smile on his face.

His gaze then paused, and he channeled spiritual energy into it. As the sword hovered in the air, he uttered a mantra:

"The vessel is formed in pairs, yin and yang unite, open!"

"Zheng—"

"Buzz—"

Two distinct sounds erupted simultaneously.

The sound of the heavy sword was as resounding as a bell, while the sound of the light sword was as clear and melodious as a chime.

In view, the sword that was originally there has been split in two.

The two flying swords intertwined and danced in the air for several circles, and finally, as if they had a spirit of their own, they drew two graceful arcs and hovered steadily beside Lin Yuan, one on the left and one on the right.

A heavy sword has no edge, its great skill lies in its simplicity; a light sword has no form, yet it chases the wind and lightning.

These are the two swords that Lin Yuan forged—Yin Yang.