"This bone refers to the root bone of the sword, the 'backbone' of the sword. It may not really be the 'skeleton'."

"Depending on the inheritance of the sword, the material of the sword bone can be gold, jade, silver, copper and iron, or wood and stone spiritual objects. Of course, it can also be demon bones, animal bones, or even human bones and other bones..."

"Generally, the sword bones of spiritual swords are not so particular."

"But the natal sword embryo needs to be warmed and cultivated to be fused with spiritual power. The natal magic weapon related to life has extremely strict requirements on the sword bones."

"In fact, the sword bone itself directly determines the final quality of the natal spiritual sword magic weapon."

"Only good bones can make a good sword."

"A sword without a bone is just scrap metal..."

After saying that, the old demon cultivator took out a long spine from the storage bag and said solemnly:

"This is the material used to make sword bones."

Ouyang Mu looked at the blood on the bones and his expression changed slightly, "Is this... human bone?"

The old demon cultivator said indifferently: "So what about human bones, and what about demon bones? Skeletons that can be molded into superior sword bones are good bones..."

"You have to learn to abandon these pedantic ideas about good and evil little by little. Otherwise, how will you gain a foothold in the Ten Thousand Demons Prison in the future?"

Ouyang Mu whispered: "Yes, senior..."

The old demon cultivator's expression turned slightly, "I'll forge it while you watch from the side."

"Um."

Then the old demon cultivator began to take Ouyang Mu to formally learn "forging sword bones".

This set of procedures is very cumbersome and requires extremely high craftsmanship.

I can't quite understand the ink painting.

He only knew some theoretical things about the art of weapon refining, including, of course, some knowledge of array design.

When it came to actually refining weapons, he was not good at it.

He could barely swing a second-grade weapon-making hammer.

Therefore, he could only watch from the sidelines when the old demon taught him how to make swords out of wood.

However, although he didn't know much about the art of weapon refining and ink painting, he was very concerned about another thing:

"Whose human bone is this used to cast the 'sword bone' in?"

"This human bone was treasured and hidden by this old demon cultivator. It was specially kept to refine the natal sword bone. This shows that the origin of this human bone must not be simple..."

Mo Hua stared at the hunched old demon cultivator, and suddenly felt a chill in his heart.

Could this bone be...

Is this old monster repairing his spine?

He took his own spine and used it to cast his natal sword bone?

Mo Hua took a breath of cold air.

What kind of sword-making method is this?

It's too cruel.

Mo Hua stared at the old demon cultivator's curved figure, as if his bones had been ripped off, and the more he looked at it, the more he looked like it.

The evil cultivator kills people, strips bones to make swords, and is just cruel to others, but this old guy is cruel to himself...

"But, does it have any special significance to use your own bones to make a sword?"

I don't quite understand the ink painting.

In the evil weapon room, the old demon cultivator tempered blood, melted iron, and forged bones... all in one go. His weapon refining skills were truly superb.

Ouyang Mu watched intently, while also thinking about what methods he could learn.

After casting like this for a while, the old demon cultivator said:

"The next sword-making process is a blood sacrifice technique. If you don't want to learn it, you don't have to watch it."

Ouyang Mu hesitated for a moment and nodded slowly.

The old demon cultivator took out a piece of fine iron and handed it to Ouyang Mu, "Take this fine iron and temper it in the blood pool over there. You will need it later."

"Yes, senior."

Ouyang Mu took the fine iron, walked aside, and put it in the blood pool to quench the blood.

The old demon cultivator glanced at Ouyang Mu with cautious eyes, and then slowly took out a pen from the storage bag with his withered hand.

After that, he used this pen to draw something on the sword bone with very obscure movements.

It's just that although he pushed Ouyang Mu away and avoided Ouyang Mu's gaze, he did not avoid Mo Hua.

When Mo Hua took out the pen from him, he was a little shocked.

This evil swordsman, instead of wielding a hammer, uses a pen?

What is he going to draw?

Mo Hua was very curious, and then he held his breath and tilted his head, staring at it for a while. Suddenly his pupils shrank and his mind was shaken.

This old demon cultivator who is proficient in making swords, what he secretly drew on the sword bone turned out to be...

Shinto formation pattern?!
Chapter completed!