The Immortal Pattern carries a trace of special aura, whereas everything else can be analyzed thoroughly.
Small Knife understands that this is power above Divinity Transformation; even if he analyzes the Immortal Pattern thoroughly, without mastering this power, he cannot truly use it.
For example, the reason the Dragon Skin Talisman is currently unable to break through the Peak of Nascent Soul is this very reason.
Spiritual Artifacts also possess this power, deriving from the Artifact Spirit.
An Artifact Spirit is formed from the Primordial Spirit of a Divinity Transformation Powerhouse or above, purified.
It contains a trace of Divine Intent.
It is said that when one's cultivation reaches Divinity Transformation, even if their lifespan is exhausted, that trace of Divine Intent will not dissipate, becoming excellent material for forming the Earth Vein Extreme Point.
