Su Yu tried again and again, absorbing spiritual energy and outputting spiritual power at the same time, and there were conflicts several times, but he was still on the right track after all.

Although Su Yu's current absorption speed of aura is very slow, it is understandable, the longer the time, the more skilled he will become.

At the same time, the alchemy rope in Songding finally had a trace of movement, and it was only a trace.

"Click!"

There was a light sound, and a tiny crack exploded on the stone lock, and the sound was small, but Su Yu still heard it clearly.

The silence in the room could be heard even if a pin fell on the ground, not to mention the explosion of the stone lock!

Seeing that the alchemy rope finally had a trace of movement, Su Yu was overjoyed in his heart, and in the cracks, he could faintly see a different luster emanating from it, it was the alchemy rope!

"Put in the Soul Relief Flower!" said the Sacrificial Vessel Spirit.

Seeing this, Su Yu put an ice-blue flower on the right side of the Song Ding into the ding, this spirit flower is one of the "foils" bought together with the alchemy rope in the "Spirit of Wumu", the spirit flower is the best auxiliary material for refining all materials, this is not known to many people, most of them only think that the spirit flower is a strange flower, but they don't know that there is another wonderful use, fortunately, the spirit of the burning sacrificial instrument recognized it at a glance, and if you understand the spirit flower, Su Yu's refining speed will be greatly improved!

After Su Yu threw it into Songding, the ice blue qi of the Linghua was flourishing under the burning of the essence of the hundred fires, and the inner wall of the entire Songding was covered with thick frost!

Seeing that the inner wall of the Song Ding was attached to the ice blue frost, Su Yu did not feel flustered, this is the cold qi in the spirit flower, as long as it is refined, these cold qi is the best material to assist in refining the alchemy rope!

Su Yu strengthened the temperature of the Hundred Fire Essence, the purple flames rose again, the purple became more and more intense, and the flames overflowed the Song Ding, devouring all the frost!

After the Spirit Relief Flower was placed in the Song Ding, a second crack quickly cracked on the stone lock, and the different luster that emanated from the crack became stronger and stronger!

Su Yu couldn't find any description to describe this luster, he only knew that this luster was very good-looking, so good-looking that people wanted to indulge in it......

In just an instant, Su Yu came to his senses, shook his head, and expelled this strange feeling in his heart, and was afraid for a while!

I didn't expect this luster to be full of confusion!

Fortunately, he came to his senses in time, and the slightest indulgence just now made the flames of the Hundred Fire Essence much smaller.

Su Yu immediately increased the output of spiritual power, and the Hundred Fire Essence was once again prosperous!

Su Yu calmed down and refined the alchemy rope, no longer staring at the Song Ding, the cold qi of the spirit flower was gradually forced into the stone lock by the purple fire, the aura overflowed, and the cracks on the stone lock became more and more!

"Bang!"

Two hours later, there was an explosion!

The stone lock exploded with a bang, but no stones splashed out of the song, and all the stones that exploded melted into stone liquid in an instant, which was absorbed by a fine golden lock!

At the same time, the spiritual power in Su Yu's body passed rapidly, and the fire of the Hundred Flame Essence was so prosperous that the purple flame almost rushed directly to the top of the beam!

"It's now!Quickly put in the Traceless Sword!" The Sacrificial Artifact Spirit spoke again, it originally thought that it would take a while for the Alchemy Rope to be refined, but it didn't expect that the speed would be so fast after adding the Spirit Relief Flower!

At the moment when the spirit of the Burning Vessel reminded him, Su Yu reacted and quickly threw the Traceless Sword into the Song Ding, and the flames of the Hundred Fire Essence were raging again, and the spiritual power output from Su Yu's body was even more!

As soon as the traceless sword entered Songding, it came into contact with the melted stone liquid, and in a blink of an eye, the stone liquid was adsorbed on the sword body, and the alchemy rope swirled up with the stone liquid, flexible like a snake, firmly entwining the traceless sword, and competing with the traceless sword for the stone liquid!

"Creation Immortal Dew, Ink Crystal, Purple Lazuli, Fire Phosphorite!" The Sacrificial Vessel Spirit quickly said four materials, the three ore materials were the same as the Spirit Relief Flower, they were all the "foils" in the "Spirit of Witchwood".

These three ores are refined together with the Creation Immortal Dew, and there will be unexpected effects!

The Sacrificial Vessel Spirit wants more than just a simple Cleansing and Casting Traceless Sword, it also wants the Traceless Sword to take it to the next level and achieve the Sword Spirit in one fell swoop!

Su Yu threw the Creation Immortal Dew and the three ores into Song Ding one by one, and the three ores quickly melted into three stone liquids of different colors, which were also absorbed by the Traceless Sword.

The speed at which Su Yu runs the basic exercises to restore spiritual power is far from keeping up with the speed of spiritual power output, and the spiritual power is passing rapidly, just a few breaths, and Su Yu's spiritual power has consumed nearly eighty percent!

Moreover, the speed of spiritual power consumption in Su Yu's body is still increasing, and this is just the beginning!

The Creation Immortal Dew was burned by the purple fire in the Ding, and the crystal drops instantly differentiated into countless drops of Dew, dense like rain and dew, falling in the Ding.

"Whew!"

The countless beads of dew that were differentiated from the Creation Immortal Dew dripped on the Traceless Sword, and bursts of white smoke immediately rose up, and the alchemy rope did not change in the slightest, not moved by the changes in the Creation Immortal Dew, but the color became more and more bright and vivid.

After the separation of the Creation Immortal Dew, the output speed of the spiritual power in Su Yu's body skyrocketed by three times!

In just an instant, the spiritual power in Su Yu's body was emptied! There were bursts of throbbing pain in the meridians!

Su Yu swallowed a Returning Qi Pill without hesitation, and at the entrance of the elixir, a strong spiritual power spontaneously appeared, continuously injecting the Hundred Fire Essence into the Traceless Sword.

After swallowing the Returning Qi Pill, Su Yu smiled bitterly, he didn't expect to swallow a Returning Qi Pill only on the first day, and there would be at least six days to go, and he didn't know if the remaining two Returning Qi Pills in his hand were enough for him to persist until the Traceless Sword was successfully washed and cast.

A trace of red and black filth seeped out from the cracks of the alchemy rope, and the speed was extremely slow, Su Yu could see that a small half of these red and black filth was mottled rust on the traceless sword, and the other half of the filth was not known to him.

And the output of spiritual power finally stabilized, slowing down a lot, not as violent as just now.

After this time, before he knew it, it was already late at night, and Su Yu absorbed more and more spiritual energy from running the basic exercises, and the faster the spiritual power recovered.

"Wash and forge the traceless, take its essence, remove its dross! This is a slow process, just keep it like it is for the next few days, and when the alchemy rope falls from the traceless sword on its own, when to put in the divine iron and the remaining materials. The Sacrificial Vessel Spirit yawned, explained to Su Yu, and then went into the Burning Space and was silent.

Su Yu wanted to ask something more, but seeing that the Burning Instrument Spirit was like this, it was not good to mention it again, in the Spirit Pill Hall before, the Burning Instrument Spirit consumed a lot of soul power, and the spirit damage had not been repaired, so now I have to heal it.