The formation of each Spirit Stone mine requires a mother stone, just like the natural formation of the heavens and the earth, gathering Spiritual Qi for hundreds of years forming a vein, and if the quality of the Spirit Stone mine is extremely high, the mother stone may form a spiritual core!
Spirit stone is the most quintessential of Spiritual Qi essence. For a martial artist, it can increase their strength. The nucleus's effect is even stronger, not only can it quickly increase martial artist's strength, but it can also use to gain great insights! High-grade Spiritual core has the effect of increasing the martial artist's enlightenment, but unfortunately, a Spirit Stone mine can only form a nucleus and not every vein.
Feng Yun understands that the big force were not willing to let go, except for the spirit stone mine, which will bring a steady stream of spirit stone income in the future, they also want to see if they get the nucleus of the mine.