The refining system of the Daluo Continent can mainly be refined into two kinds of magic weapons and Dao weapons, and Dao weapons are too rare, and only individual refining weapons can be done, but because this kind of power is very small, and the refining materials required for Dao weapons are too harsh, the probability of refining success is extremely low.

The level of the magic weapon is mainly from the first order to the ninth order of the mortal level, which is basically suitable for cultivators in the condensation stage and the Zhou Tian stage. Yuntian's plan is to refine the magic weapons from the first order of the mortal level to the third order of the mortal level, and the magic weapons of this level are basically suitable for the scope used by the cultivators of the Condensation Period.

Yun Tian correctly classified the materials collected from this underground space, and counted some of the most common materials here, which happened to be things that could refine the mortal-level first-order magic weapon Flame Flying Knife, the mortal-level second-order magic weapon Wind Shadow Dagger, the mortal-level third-order phantom bow, and the mortal-level third-order defensive array base.

The materials required for these magic weapons are extremely abundant in the underground space, and it can be said that Yuntian can obtain enough back-up supplements in the process of refining the weapons, except for a small amount buried in the Zhihai space for self-derivation, the rest is enough for him to test to the mastery. Therefore, Yuntian's next goal of refining weapons is naturally to focus on the refining of these magic weapons.

For any magic weapon, there are two main difficulties in its refining.

One is the grasp of the fire element in the process of refining, which is a problem that must be continuously paid attention to from the beginning of the refining to the end of the refining, just take the mortal-level first-order magic weapon flame flying knife that Yuntian first refined, for example, because the flame flying knife as the name suggests, this magic weapon itself has the characteristics of fire attributes, so when refining this magic weapon, it needs to be very sensitive to the surrounding fire elements, and can drive the surrounding fire elements when running the magic weapon, and constantly increase the power of the magic weapon with the help of the surrounding fire elements, so that the flame flying knife can exert its greatest power。

Moreover, the refining of any magic weapon must rely on the fire system true qi, and those who cultivate to a higher level and have a higher level of magic weapons need to refine this completely with the fire system true qi, while those who have a low cultivation level, and those who have a low level of magic weapons, do not need to be too demanding, they only need to use the fire system true qi as a guide, and use the earth fire or the fire for calcination.

Yun Tian couldn't find the earth fire in the underground space, so he could only choose to make charcoal from some wood in advance, and then use these charcoal fires to refine magic weapons. Fortunately, the most important thing in the underground space is wood, which is almost inexhaustible, so Yuntian backed up a large amount of wood and calcined a large amount of charcoal.

In the refining of magic weapons, true fire calcination is the key, so the control of fire elements must run through the entire refining process, as for the rest of the processes such as tire making, refining, and forming tools, on the one hand, you need to use tools to hammer, and on the other hand, you need to use mental power or spiritual sense to control zhì.

Yun Tian also discovered the benefits of his strong spiritual sense, a powerful spiritual sense, which must be used in alchemy, refining, and refining arrays, and it is precisely because he has a strong spiritual sense that he has greatly improved in these aspects, and the speed of skill improvement is amazing. In addition to the talents that may be there, the role of this powerful spiritual sense is also not small.

There are more than ten kinds of refining materials for the Flame Flying Knife, among which stainless steel and pure gold are the main materials, and there is also a little mythril, these things Yun Tian has prepared, and what excites Yun Tian the most is that the pure gold and mythril that are extremely difficult to find in the outside world are actually rich in resources in this underground space, and he has found a lot, and all of them are included in his sea knowledge space. No matter what you put into the sea knowledge space of the clouds, you can grow by yourself, even if you bury some iron ore, pure gold and mythril, over time, these things will become more and more in the sea knowledge space, and even slowly form ore veins.

Adamantite and Mithril are naturally found, while steel is made from iron ore before being further forged. So Yuntian had to set up a steelmaking furnace again.

At this time, there was not much technology in steelmaking, but Yuntian had a mature steelmaking method, he first smelted iron ore into wrought iron, and then smelted liquid pig iron, and the liquid pig iron was smelted directly on the wrought iron, so that after gradual penetration, high-quality steel was refined.

Of course, the purity of the steel refined by this method is still not enough, so it needs to be further forged by Yuntian to completely forge the magazines inside.

Refining steel is an extremely laborious process, but fortunately, Yuntian refines all small magic weapons, and he doesn't need much steel, so he only needs to refine a certain amount of steel.

In the first few days, Yuntian made steel every day, from smelting pig iron and wrought iron, to pouring steel, and then to tempering steel into steel, the whole process was very long. This took half a month of cloudy sky.

Because there were still a variety of magic weapons to be refined later, Yuntian had to prepare enough steel at one time, so the amount of steel he prepared was larger.

After the steel was ready, Yun Tian started the first magic weapon, in line with the principle of going from easy to difficult, Yun Tian naturally started refining from the mortal-level first-order flame flying knife this time.

The Flame Flying Knife is a mortal-level first-order magic weapon, which is characterized by having some characteristics of the weapon Flying Knife, and also comes with fire elemental damage, although this Flame Flying Knife is only a mortal-level magic weapon, but its difficulty in building is not low, and it was purchased from others in the past, and this time Yuntian is going to build a magic weapon by himself, which is refined by others and the magic weapon that has been refined by himself, the feeling is completely different.

This is also the first time that Yun Tian has refined the magic weapon by himself, and it is destined to be more rigorous, he first reviewed some detailed descriptions of the refining tools on the secret of the Great Yan True Recipe refining tool, and went through the steps of the entire refining tool in his mind several times, until he realized that the entire process had been deeply imprinted in his mind, and then the materials were arranged in the order required for the refining tool, and the refining officially began.

In the process of refining steel, Yuntian has easily created the tire shape of hundreds of flying knives, which means that the initial three processes of material selection, fire control and tire making have been completed. Therefore, when he began to refine the Flame Flying Knife, all Yuntian needed to do was to directly carry out the two processes of refining and forming.

The knife tire has been built countless times, and the knife body has been very perfect, so its refining is mainly to use the real fire to further quench the internal impurities, and at the same time properly introduce the true fire into the inside of the knife body, so that it can form and stay, so as to facilitate the control of the magic weapon in the future.

The final process is the completion of the weapon, the individual of the flame flying knife has been formed, and the final artifact is mainly driven by Yuntian's powerful spiritual sense to drive the fire system true qi to be further infused into it, once the fire system true qi is successfully instilled, it can be associated with the caster, and the refining of this magic weapon is also successful, of course, the first few attempts, Yuntian still ended in failure.