A Spiritual Root is essentially the affinity a person has for the spiritual energy between Heaven and Earth. Therefore, only those with a Spiritual Root can cultivate.
That's because cultivation requires consuming the spiritual energy from within Heaven and Earth, but if one's own body has no affinity for this energy and can't attract it, how can they cultivate?
Therefore, the Spiritual Root is essentially a person's affinity for spiritual energy after birth. The higher the attraction, the stronger the Spiritual Root.
According to the classification in this world, Spiritual Roots vary in levels and properties. In Pei Xuanjing's view, it is just a distinction based on the speed and amount of attraction one's physique has for spiritual energy with different properties.
