The Yuan Magnetic Spiritual Vision Formation is a second-grade, seventeen-pattern formation.
The Yuan Magnetic Spirit Vision Compound Formation is a second-grade, eighteen-pattern compound formation.
Mo Hua's current divine sense is just stuck at the peak of seventeen patterns, barely short of eighteen patterns.
Logically speaking, even a slight difference is still a difference.
If one's divine sense is not at eighteen patterns, they cannot learn the eighteen-pattern compound formation.
But Mo Hua is somewhat unique.
His divine sense has undergone a transformation, with a deep foundation, and through daily formation painting, his divine thought is tempered a thousand times over, allowing him occasionally to 'exceed the mark' and learn formations he otherwise wouldn't be able to with his current divine sense realm.
Moreover, the Yuan Magnetic Compound Formation of the Valley of Ten Thousand Demons is based on a foundation.
They were first constructed, then demolished.
