The compatibility of spiritual roots was closely related to the length of a cultivator's life. If you only had compatibility with one spiritual root, then you would not be able to live for more than five elements during your longevity period. If you had compatibility with two spiritual roots, you could live for more than six elements. If you had compatibility with five spiritual roots, you could live for more than ten elements. If you had seven spiritual roots and you had compatibility with all seven spiritual roots, you would not be able to live for more than five elements. Then, when you reach the longevity stage, you can even live for more than 10 yuan, and may even live for about 15 yuan.
Longevity stage cultivators who could live up to 15 years were almost all heaven spiritual roots. Only a few demonic beasts could compare to cultivators with heaven spiritual roots in terms of longevity.
