The quality of those two spears is not low. Even if they have been melted into liquid, it still takes a lot of work to completely extract the essence inside.

Especially temperature control.

The key to refining the star lies in refining. If the temperature is one point higher, the essence inside will evaporate directly. If the temperature is one point lower, the essence cannot be extracted.

Therefore, how to control the temperature within a certain time range has become the key to the success of star refining.

The temperature required for each type of treasure to be smelted is different. There is no fixed value and can only be explored slowly based on experience.

This requirement may seem excessive, but for Feng Qingyu, who has had many successful experiences, it is not that difficult.

As long as you find the point where this mass of molten metal is exposed, it is not difficult to extract its essence.

What Feng Qingyu didn't expect was that such a simple question would become a huge obstacle in front of her.

She couldn't extract the essence of this molten metal!

Feng Qingyu was really speechless when the essence of the molten metal that he had worked so hard to smelt could not be extracted.

She tried various levels of temperature, but she really couldn't find the point where the essence of this molten metal melted.

What to do?

The two spears have been fused to this point, making it impossible for her to return to her original appearance.

She knows how to refine stars, but not how to refine weapons. The longer the molten metal is left, the faster the essence inside will evaporate.

If the essence inside cannot be extracted before it evaporates completely, then this ball of molten metal will really become an iron lump!

Feng Qingyu was anxious and desperately looking for a solution. Then she sadly discovered that it was not that the essence could not be extracted from the molten metal, but that the temperature of the golden flame was not enough!

"It's so perverted, the temperature of this flame can burn a mountain, and it hasn't even reached the melting point! Jin Yan, come and try it!" At the same time as the words came out, Feng Qingyu had already conveyed his thoughts.

Jin Yan, who was nestled in the gray stone, was reluctant at first, but reluctantly left his new home and came to Feng Qingyu.

"Integrating into the flames, I want to see if this thing can withstand your burning!"

As soon as he finished speaking, Feng Qingyu pointed out, and Jin Yan's original figure shook and completely merged into the flames.

The integration of the origin of Jin Yan immediately increased the temperature of the flame, and the color of the molten metal also became more lustrous, but that was all.

No matter how hard Feng Qingyu tried after that, the ball of molten metal did not change much.

“I still don’t believe it can’t be refined!”

After paying such a heavy price and now being stuck with insufficient temperature, Feng Qingyu really tried her best.

The knife is right at the entrance of the cave, staring at this place. If the stall tells it that it can't extract the essence of the spiritual liquid, it will have to explode!

No, it took a lot of effort to suppress its arrogance. If it knew that there was nothing it could do with this ball of metallic liquid, it might be what words it would use to try to bully her!

"Is there any way to increase the temperature?" Feng Qingyu tried her best to activate her vitality while transmitting messages to Jin Yan's origin.

Jin Yan hesitated for a long time before sending a message to Feng Qingyu, asking her to take out the gray stone and hand it to her.

The gray stone could not be absorbed into the sea of ​​consciousness, so Feng Qingyu carried it with her.

Jin Yan didn't go with her when she went out before, so she left the gray stone behind.

Now the gray stone was lying in the corner of the cave, but Feng Qingyu didn't know what Jin Yan asked her to do with it.

With a quick release of the energy in his palm, Feng Qingyu took the gray stone into his hand.

Picking up the gray stone and taking a glance at it, Feng Qingyu threw it to Jin Yan.

The moment the gray stone was caught, the source of Jin Yan immediately rose up, and the surrounding flames surrounding the molten metal also boiled together. It seemed that the gray stone contained some kind of energy that could stimulate the potential heat of the flame.

Seeing that this method was effective, Feng Qingyu hurriedly increased her vitality output again, but at this time, the origin of Jin Yan once again sent her thoughts, telling her to just focus on controlling the temperature, and there was no need to use her true energy to help it.

With this piece of gray stone, it will increase the temperature to the standard Feng Qingyu wants.

Silently withdrawing her vitality, Feng Qingyu only used her soul power to monitor the reaction of the molten metal, and left all the rest to Jin Yan's origin.

The flame energy released by the flame source is far more powerful than what she, a cultivator, can release.

As soon as the gray stone was submerged in the flames, its color turned red, and countless tiny holes were exposed on its originally smooth surface.

Those holes are densely packed like a honeycomb, and it is through these holes that Jin Yan enters and exits inside the gray stone.

It was still strange. She had carefully checked it several times with her spiritual sense before, but she could not find any holes in the stone.

Including every time Jin Yan came in and out of the stone, Feng Qingyu always thought that they were of the same attributes and automatically merged. He never thought that Jin Yan drilled into the stone through these holes.

The source of Jin Yan was submerged into the stone, and the temperature of the flame rose rapidly. However, within the breath, the temperature reached an extremely terrifying level.

According to Feng Qingyu's estimation, even the flames in the mid-level heaven level may not be able to reach this temperature. However, it is really surprising that Jin Yan can raise the temperature to this level with just this small piece of stone.

You must know that after the heaven level, whether it is a flame, a beast, or a demon, every step forward is extremely difficult.

Without hundreds of years of energy accumulation, there is no way to enter the next stage, but this stone that does not even have a grade can actually allow Jin Yan to break through to the middle stage of heaven. Although this is only temporary, it is really abnormal.

His mind wandered for just a moment, and the metal liquid began to become extremely hot, with wisps of black smoke rising from it from time to time.

Seeing this scene, Feng Qingyu stopped thinking too much and hurriedly concentrated her thoughts to start refining.

When the temperature rises, it is not that difficult to extract the essence. As long as the heat is controlled well and the temperature does not fluctuate too high or too low, the black smoke will continuously overflow from the molten metal.

When the black smoke no longer appears, the initial refining will be completed.

It's just that the essence at this time is not pure enough and needs to be further tempered repeatedly with low fire.

And this tempering process is also the most torturous.

Feng Qingyu needed to integrate her soul power and thoughts into the flame, and observe the reaction of the essence at all times. She could not let the temperature of the flame rise even one point higher, and she also had to ensure that the temperature inside and outside of the essence liquid was exactly the same.

At this time, Feng Qingyu must be highly concentrated, not letting go of any changes, and always paying attention to the spillage of impurities and the reaction of the essence spirit liquid to the flames.

For three whole days, Feng Qingyu spent time in this extremely boring and energy-consuming state.
Chapter completed!