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Although, when breaking through the Nirvana Realm, the awakening soul traits of the Martial Soul could differ. Some might even possess peculiar traits.
However, most characteristics that Martial Souls can awaken to have been documented and categorized based on their strength into three levels.
The Martial Soul traits are divided into Class A, B, C, and D, with each class further divided into upper, middle, and lower three levels.
For example, Lei Qian's Martial Soul's thunder paralysis trait belongs to the C-level upper trait, making his grandfather, Lei Heng, happy for a long time.
After all, the Martial Soul trait of the Wanxiang Sect's Emperor Lei was merely a C-level middle trait.
That his grandson could break through to the Nirvana Realm with an eight-wheel Nirvana and awaken a C-level upper trait was a surprise delight. Nothing is better than one's grandchild being successful.