While refining magic weapons, Zhang Ping thought while thinking, and even gave his IQ a drop of merit. Not having enough IQ is a flaw:

Speaking of the difference between dark matter, dark energy and normal matter and the visible world, is essentially the difference between energy properties, so cultivation and all means of practice are the use of dark energy.

To put it more directly, it can be seen that matter is basic matter and low-energy matter; dark matter and dark energy are high-energy matter. That is why the so-called spiritual energy, true energy, etc. in cultivation are approaching dark energy.

The spiritual materials in cultivation, such as low-level spiritual materials such as black iron and red copper, are actually basic substances containing dark energy. Since they contain some kind of energy, there is a concept of "saturation" in scientific research.

The dark energy (real energy) saturation of natural materials is usually less than 10    %.

If you want to refine magic weapons, so that they can be as big as possible, or even enter the body, one of the important steps is to "purify".

In fact, from the perspective of current scientific research, the so-called purification is to improve the saturation of spiritual energy - different practice systems require different dark energy. What is used for cultivation is spiritual energy; the body of the cultivator is true energy, and the true energy and spiritual energy are inherited from the same lineage.

However, not all atoms in the material can be continuously improved, and those that cannot increase saturation need to be eliminated.

Therefore, refining weapons or refining materials includes two steps: purification, empowerment - increasing saturation. Empowerment mainly involves true qi, spiritual energy, and spiritual power.

Only when the spiritual material reaches a certain purity limit can it show the characteristics of dark matter.

However, the purity requirement is not high, and there is no need for three nines and six nines, and maybe less than 30%.

According to the material knowledge Zhang Ping learned from the 'Big Brother Jiang Ziya (Jiang Taiyuan)', as long as ordinary spiritual materials are refined by the real fire, they will have some dark matter characteristics.

True fire can only be produced after the Golden Elixir stage under normal circumstances. It is a super high pressure and ultra-pure dark energy collection. Using true fire to refine materials also has a saturation problem.

If you refine magic weapons, theoretically, it is enough to reach 30% of the spiritual material saturation.

The requirements for magical instruments are lower. Some very low-level magical instruments, even just a little special ink, are enough, and there is no concept of "saturation".

However, the limit of saturation is not 100%. According to Jiang Taiyuan, he can achieve thousands of times "ultra-ultra-super saturation" under the limiting environment of the laboratory.

However, if the extreme environment is removed, the maximum saturation record that can be stably retained in the natural environment is 327%. It is a bit like smoke and sulfuric acid. However, a more appropriate metaphor should be a magnet.

Zhang Ping estimated that in order to make the material reach the state of dark matter invisibility, the saturation level may exceed 80%, at least.

At this time, a table appeared in Zhang Ping's mind, which was a statistical table by his senior brother Jiang Taiyuan. Because of the different characteristics of different materials, the data in this table is for reference only.

Theoretically, if the spiritual saturation of a general spiritual material reaches 30%, you can refine magic weapons. However, considering various practical problems, the minimum saturation of magic weapons is about 36%; if it is too low, the effect cannot be guaranteed.

The medium-grade magic weapon is about 50% (40%~60%), and the top-grade magic weapon can reach 80% (70~90%). The top-grade magic weapon can reach more than 90%, or even more than 100%.

But the reason why magic weapons can be invisible is that they are enlarged and reduced is that in addition to the materials themselves and special formations, there are also the powerful spirit of the weapon refiners (spiritual consciousness, even souls), and their true energy to complete transformation. Zhang Ping does not have these.

What Zhang Ping has is half the spiritual power that transforms, half the true energy that transforms, and the sun true fire that exceeds the limit.

If Zhang Ping wants the magic weapon to have stealth ability, he can only use the sun's true fire to crazily improve the "dark energy saturation" of the material.

The sun's true fire is burning, and a large number of "impurities" that cannot improve saturation are removed.

The method of purifying true fire is very simple - if it cannot increase saturation, it will be blown away by the true fire; if it can continue to increase saturation, it will be affinity with the true fire and will not be blown away.

Of course, the skills required personal exploration.

Zhang Ping slowly but steadily increased the power of the true fire. Gradually, at the beginning, the ten kilograms of black iron iron sand was now less than one kilogram left. However, as Zhang Ping continued to increase the power of the true fire, the remaining molten black iron was still decreasing rapidly.

Liu Baoying still watched quietly, without any pain in the consumption of black iron - in fact, the impurities removed by Zhang Ping fell at Zhang Ping's feet, forming a piece of iron powder. These things can also be collected.

The most important thing is that the "impurities" refined by Zhang Ping are all treasures in Liu Baoying's opinion.

Time passed little by little, and Liu Baoying threw more than 50 kilograms of black iron away. In the end, only a ball of iron about the size of a fist was left in Zhang Ping's hand, which was estimated to be no more than 2 kilograms.

This ball of iron has a faint golden light, like a top-notch gem.

Zhang Ping smiled. At this time, his true fire power had reached its limit, but the effect was beyond imagination.

This ball of iron was completely filled with Zhang Ping's true energy. Zhang Ping estimated that the saturation level was at least 90%, or even close to 100%. It was just that there was no instrument, no experience, and no senior brother around him, so he could only guess.

The reason why it is estimated that more than 90% is because the elder brother explained that the true qi flows smoothly without any obstacles, without any stagnation, and at least 90% of the saturation.

If the saturation exceeds 100%, there will be a flowing light.

Now it seems that it should be between 90% and 100%.

What Zhang Ping is even more satisfied with is that Senior Brother Jiang Taiyuan said that Senior Brother Jiang does not borrow equipment and only refines weapons with bare hands, he can only reach 90%. Jiang Taiyuan's cultivation level is in the late stage of the Nascent Soul!

After taking a few deep breaths, Zhang Ping calmed himself down. He has only completed half of the weapon refining now, and the next one is crucial. So he can't do it yet.

Under Zhang Ping's control, the molten iron slowly changed into the shape of the long knife; and one of the two fine copper rings just refined was embedded in the swallowing position of the knife handle and quickly merged into the molten iron.

Then I saw a golden formation faintly spreading out from the thin copper ring and quickly spreading to the sword. The entire long sword faintly echoed the bronze bracelet placed in front of Zhang Ping, and the formation shone together.

"So amazing, paired! It feels like a wireless connection." Liu Baoying couldn't help but exclaim. Seeing now, she finally couldn't help but feel surprised.

Although she obtained the "Intermediate Artifact Refiner Qualification Certificate", Liu Baoying had only one feeling in front of Zhang Ping: she was still a child... a student.

The familiarity of formation, control of true fire, familiarity with materials, and the powerful skill of true fire and flowing water all made Liu Baoying feel like he was admiring the mountains.

Looking at the "assistants" prepared for Zhang Ping, Liu Baoying suddenly felt a strange feeling: these people are not "assistants", but "constraints"!

Now these guys stood aside and stared at each other, not knowing how to cooperate with Zhang Ping to refine weapons. In the end, it was Liu Baoying who stepped forward to assist (study secretly).

Without Zhang Ping saying anything, Liu Baoying skillfully opened various equipment, prepared various materials, and activated various formations. As for these assistants, they were all driven out.

"call……"

Liu Baoying was obviously relieved when she heard Zhang Ping. She turned her head and saw Zhang Ping taking the time to nod, and Liu Baoying smiled back.

Refining the weapon, continue.

When the copper ring and the long sword were completely merged, and when the formation and bracelet inside the copper ring were completely "matched", Zhang Ping twisted a little golden Mars again, but only a little bit of the needle-sized firelight made Liu Baoying feel the scorching and creepy crisis.

This little bit of fire can easily pass through sword weapons, branding arrays, refining weapons, and use them to attack... there is no doubt about the power.

The familiar weapon refining method is back. Venus jumped and roamed on the surface of the long sword, outlining exquisite formations. Because the speed is too fast, coupled with the dragged flame phantom, it forms a layer of golden gauze with the array pattern, which quickly extends to the tip of the knife.

In just a few minutes, a layer of golden gauze appeared on the blade that was still in the semi-melting state; then the gauze gradually became addicted to the blade, leaving behind a thin array pattern as thin as hair.

Zhang Ping held the long sword and the sun's true fire was nourished over and over again. This kind of nourishment could make the formation more perfect and fit deeper with the long sword itself. Of course, it could also deepen the "spiritual saturation" of the material of the blade itself.

The most important thing is that the array pattern is also slowly seeping into the blade body.
Chapter completed!