Tie Dan skeptically looked at the Five Elders. With his level of daoist skill, he could only faintly make out the five ordinary-looking old men from the magic light that reached the sky and the earth.

These were all Dharma Manifestation Dao Bodies, and might indeed be True Bodies returning to the truth. Although he had never seen them before by appearance alone, when divine senses intersected, through the YCM method of primordial spirit confrontation and reconnaissance, he could sense at least two divine thoughts, which seemed to have intersected with him somewhere before.

"Feel free, don't mind us, you continue, you continue."

"Quite right, we're just out for a stroll, do what you need to do."

"The furnace is okay, barely sufficient, but the fire is somewhat lacking."

"Hmm, this earth vein's output is not enough; after all, it's not a Cave Heaven Blessed Land, affecting the Jade Candle Sword Power."

"Ah, stop talking nonsense, let him cast, let him cast."

"..."

Then the Five Elders just watched him from the side. A demeanor of just watching, saying nothing.

Well, in any case, Tie Dan wasn't capable of driving them away, so he had to continue his own work.

So he directly drew a circle, setting up an array around Yingzhou City, basically encircling the main killing tribulation battlefield and the two opposing military camps, in preparation for sword casting.

"Why draw it so large, can you handle it?"

"What array is this? Never seen it before?"

"Seems like some kind of primordial spirit illusion technique?"

"So that's it, he kept part of the earth vein to supply the array on this side."

"Hey hey, don't disturb him! It's fine, it's fine, do your thing."

"..."

Tie Dan squinted, watching as the Five Elders followed him everywhere side-by-side, like neon signs cheering him on.

The Five Elders also looked at him with fifteen curious eyes, their eyes radiant with swirling colors, as annoying as fifteen flies.

Well, they had an additional heavenly eye opened in the center of their foreheads, seemingly some sort of daoist skill, and it supposedly had a similar effect to Tie Dan's own pupils, seeing the unseeable and breaking unrecognizable methods.

Tie Dan couldn't drive them away either, so he had to ignore them and continue setting up the array.

Suffice to say, once iron was produced, it needed to be refined into steel, and the steel used for sword casting.

Thus, the true steel for casting this sword naturally needed to experience tribulation, born for battle, using unprecedented murderous energy and blood food of human souls for the best sacrifice and refining.

Therefore, in ancient sword casting methods, it generally involved using blood sacrifices to bring out the sword.

This initially was a secret technique of evil demons and heretics, like the Blood Clothes Sect, using human souls to sacrifice to the blood clothes, using ferocious ghosts to refine artifact spirits. In the prolonged validation process by the Mystic Sect, they found that this seemingly evil magic and witchcraft indeed had some effect. Although they didn't understand why, it seemed to hold some mystical rationale, so they retained it.

Thus, generally when casting a treasure sword, it sometimes easily killed a few people for the sacrifice, and one wave or two waves of killing were not enough. Some treasure swords had been drinking blood before their Sword Spirit even emerged, beheading over a hundred people at a time for the sacrifice.

Those earth-shaking, world-class divine swords, when the furnace began and the edge appeared, the sect had to proactively start a killing tribulation sword fight, using blood sacrifices of ancient divine beasts, ferocious ghosts, demon gods, mountain men, and true immortals to sacrifice the sword.

Therefore, it's often said that sword casting destroys a sect, and it truly is the literal destruction of a sect, needing to kill everyone in the sect as blood sacrifices, to obtain a formidable weapon, an extraordinary good sword!

Tie Dan wanted to do it right; although it was his first time, he aimed for an extraordinary good sword, so he was going to use blood sacrifices for the sword from the start.

But the problem was Tie Dan didn't have the resources of a sect, nor so many heavenly materials and treasures, only tens of thousands of troops caught in the killing tribulation he could borrow and use.

But actually, there was no need to kill tens of thousands of people and throw them in the pot. After all, Tie Dan was not some indiscriminate killer demon head. Each refinement, he just needed to use the essence blood of a few Martial God Realm experts for the sacrifice.

Yes, combining the scientific mystical principles of Hidden Sword Manor, Artifact Refining Sect, Blood Clothes Demon Sect, and steel metallurgy, Tie Dan and Xuantian designed an entirely new process.

External refining, multiple re-melting, continuous steel casting.

In brief, traditional steelmaking is conducted within a furnace, melting, dephosphorization, desulfurization, removing impurities and main alloying to obtain primary molten steel. Refinement is moving the primary steel to a vacuum or inert gas environment for degassing, deoxidizing, desulfurizing, removing inclusions and fine adjustment of components, improving steel quality, shortening smelting time, optimizing process flow, and reducing production costs.

Thus, Tie Dan used the 'YCM super wide-area wide-range interference magic!!' to create an 'external furnace.'

The two armies on the Yingzhou battlefield, under the illusion domain interference of the YCM method, fell into an Infinite Killing Tribulation Illusion. They would repeatedly slaughter in this illusory killing tribulation, endlessly, without stop.

The armies were like falling into an unending purgatorial battlefield, in an intense conflict, fighting incessantly, while their bodies were in the dream state, the murderous energy would still continuously emanate, thus filling the 'external furnace', using the killing intent and death intent of tens of thousands of people, leaving only the pure intent of 'kill' to temper and refine the true steel.

Finally, after countless refining and extracting, discarding the dross and preserving the essence, persistently improving, a world-class formidable weapon was finally forged, nurtured in the endless war inferno, purified in the slaughter of tens of thousands, through hundreds of lifetimes.

This sword embryo was finally forged.

Five Elders, "Oh my… what the hell…"

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