You Zhukong was worried about failure, so he only used a small amount, and the seven or eight kinds of raw materials that were put in for the first time were constantly burned in the refining furnace, and gradually began to melt and fuse.

After completing the first stage, You Zhukong continued to report the raw materials and quantities, and soon five or six auxiliary materials were also put into the refining furnace, which were used to improve the metal's aura sensing ability, and the requirements were extremely subtle.

You Zhukong carefully controlled zhì, put both hands on the refining furnace, and his aura was divided into more than a dozen strands, going deep into the refining furnace, controlling each component separately, and carrying out complex fusion. This process was very difficult, and You Zhukong persisted for nearly an hour, and his body was already beginning to sweat.

Suddenly, there was a stirring in the furnace, and the top cover of the furnace began to vibrate, and You Zhukong felt that the aura was uninterrupted, and it was difficult to control the changes in the furnace, and there was a danger of frying the furnace at any time.

He hurriedly glanced at Qianqian, who understood, leaned over from behind, grabbed his two big hands, as if hugging him from behind.

In an instant, Qianqian's abundant aura poured over, and You Zhu was overjoyed, Qianqian's aura belonged to pure yin, using yin to control yang, and overcoming rigidity with softness, which was just able to effectively control the firepower.

You Zhukong hurriedly divided the newly obtained aura into dozens of shares, respectively controlling the various violent ingredients, and after a moment the refining furnace was quiet, You Zhukong continued to use his soul power to guide, and urged with his aura, and after another moment, the second process was finally completed.

You Zhukong took a breath and reported several core raw materials, and Zhu Cheng hurriedly poured the raw materials into the refining furnace. You Zhukong closed his eyes, no longer looked at the things around him, and entered a state of meditation, and the entire refining furnace seemed to become his body, and the changes in it were all visible.

This was the most difficult step, several raw materials fused with the refined liquid metal, but they conflicted with each other, and You Zhukong could only be constantly infused with aura, pressurized and warmed.

Qianqian stood behind him and felt that he was consuming a lot of aura, so his whole body simply stuck to it, hugging You Zhukong tightly from behind, and the aura of the two of them immediately merged into one. You Zhukong gained more motivation, and at the same time, his heart was also beautiful, and the feeling of being hugged by a beautiful woman was so happy.

After another half an hour, these stubborn raw materials finally changed, You Zhukong felt sparks appear in the refining furnace, this is the process of fusion, gradually more and more sparks, at first only red, then become colorful.

Finally, with a flash of light, all the matter fused together, and the metal in the furnace became one, spinning and flowing in the furnace smoothly.

This is the Absolute Spirit Iron, so far the aura of the Wandering Void can no longer have an effect on them, as long as there is an influx of spiritual energy, these metals will escape in all directions.

After spinning around for a while, You Zhukong felt that the time was ripe, roared, and slapped the furnace wall with both hands, and the top cover of the refining furnace collapsed and bounced to the top of the secret room. Zhu Cheng saw the opportunity and hurriedly set the container, which had already been filled with the crumbs of a special vine grass, and You Zhukong grabbed the refining furnace and poured out the spiritual energy substance.

The liquid metal entered the container and reacted with the vine grass fragments, emitting a hissing flame, and in a moment the metal evenly covered the container and became a thin layer.

You Zhukong and Zhu Cheng operated and splashed water on the metal, and a large amount of water vapor immediately came out of the room, and the room became smoky, and soon a pungent smell spread, and the three of them didn't expect this, and they all choked and coughed violently.

Later, they coughed and had no choice, so they hurriedly escaped, and after a while waited until the water vapor dissipated, and then returned to the secret room.

A thin metallic film was already in front of their eyes. You Zhukong stepped forward to test the temperature, the Absolute Spirit Iron had cooled, and when it was uncovered, it looked a little irregular, even a little ugly, but the first time he tried, he was able to forge it successfully, which was already a miracle.

Qianqian launched the aura against the membrane of the absolute spirit iron, and the aura was blocked and turned back, You Zhukong could clearly observe the changes with his soul power, and he laughed and said, "No problem, it's successful!", the three of them cheered in unison.

So they hurried to work overnight, and refined five more furnaces, one of which failed, and these absolute irons were enough to fill several rooms, so they stopped. The three of them were exhausted, especially Qianqian, and the aura in her body was almost drained by You Zhukong, and she was frozen on the ground, unable to get up again.

After completing this important work, the next day the three of them went to the cultivation tower listlessly, You Zhukong and Zhu Chengyi discussed, it was not appropriate to let Nalan Ruoshui know these secrets for the time being, so they discussed a countermeasure and exchanged rooms with each other.

Since You Zhukong's practice room was located at the top of the cultivation tower, no one cared about it here, so Zhu Cheng and Nalan Ruoshui could practice day and night without asking their instructor for instructions.

And You Zhukong and the others covered Zhu Cheng's practice room and one of their secret rooms with spiritual energy isolation substance, which was equivalent to having two practice rooms day and night, and both parties were happy.

When she met Nalan Ruoshui, she seemed to remember the unbearable scene that day, as soon as she saw You Zhukong, her face turned blushing, and You Zhukong was also quite embarrassed, so she quickly shifted her gaze and tried not to look at Nalan Ruoshui.

Zhu Cheng was careless and didn't check at all, but Qianqian looked at the two of them strangely, You Zhukong and Nalan Ruoshui hummed, and finally covered up the past.

After exchanging the practice room, how did Zhu Cheng explain to Nalan Ruoshui, You Zhukong no longer cared, he and Qianqian slept all morning, and when they regained their energy in the afternoon, they began to set up a new practice room.

The process of laying is more complicated, a bit like laying wallpaper, they found a natural glue to stick to the metal film. Qianqian was very careful, requiring every wall and corner to be neatly paved, so that after tossing for an hour, the practice room was completed.

That night, the two of them made persistent efforts, and spent the whole night covering a secret room with absolute spirit iron, and You Zhukong also specially made two doors to prevent the overflow of spiritual energy, and such an underground practice room was also born.

In order to build this magical practice room, they wasted nearly ten days, counting the three-month deadline, there were still about twenty days left, You Zhukong and Qianqian no longer thought about other things, and began to cultivate wholeheartedly, hoping to rise to a higher level.

Soon, they found the best way to cultivate, the practice room on the cultivation tower, the room was small, and the aura was easy to fill, so the daytime was mainly based on You Zhukong, and Qianqian came to assist him in his cultivation.

The practice room in the secret room is very large, which is suitable for Qianqian's abundant spiritual energy, and the night is yin, which is very suitable for the cultivation of pure yin physique.

In the past two days, they have advanced by leaps and bounds, and soon entered the peak from the middle of the third-level yellow stage.