Wang Daoyuan still needed to nurture the Yin-Yang Compass and the Slaughtering Demon Sword, so he could not leave casually.
His trip to the Absolute Heaven Abyss would have to wait until after he finished nurturing the artifacts.
For now, he could also take the time to study more restrictions. The grade of a spirit artifact was related to the number of restrictions it contained.
Although the restrictions of sixth-order and seventh-order spirit artifacts differed, there was no essential distinction between them.
Both were composed of Law Inscriptions and artifact inscriptions; seventh-order spirit artifacts were merely more complicated.
The most intuitive difference between spirit artifacts of different grades was the number of restrictions.
One to nine restrictions made a Low-grade Sixth-order spirit artifact, while ten to eighteen restrictions made a Sixth-order Mid-grade spirit artifact.
By the same logic, a seventh-order high-grade spirit artifact possessed more than forty-five restrictions.
No matter how many more restrictions it had afterward, it could only be a seventh-order peak spirit artifact.
At the eighth order, it became an Immortal Artifact, fundamentally different from a spirit artifact.
Since every restriction carried an enormous amount of Law Power, the more restrictions there were, the greater the pressure on the artifact embryo.
Inferior artifact-refining materials simply could not bear too many restrictions.
The artifact-refining materials from Dragon Turtles and sixth-order Kui Flood Dragons could carry no more than twenty restrictions.
Nineteen restrictions made a High-grade Sixth-order spirit artifact. Refining an artifact with nineteen restrictions from such materials placed extremely high demands on an Artifact Refiner's skill.
Without years of painstaking refinement, it was simply impossible.
It also required exceptional materials, such as Reverse Scales, dragon pearls, and Dragon Horns.
Every day, Wang Daoyuan studied restrictions and attempted to refine spirit artifacts of even higher grades.
At intervals, he