The Old Monster in Stone originated from a Ten-Thousand-Year-Old Earth Essence and itself did not possess any Divine Skills.
The Divine Power of Stone Cast Earth Treasure came after it swallowed a fragment of the Dividing Treasure Rock, and after a long period of cultivation, it finally achieved such a fruitful result.
This was extremely difficult!
Inherently, these types of Earth Essence and Fire Essence beings, compared to Demon Beasts and Spirit Plants, had even more difficulty entering the path of cultivation.
They needed at least ten thousand years of accumulation to possibly begin the path of cultivation.
For instance, the Ten-Thousand-Year-Old Fire Spirit in Fire Persimmon Mountain had absorbed the Spiritual Nature dissipated after the downfall of cultivators, and only then did it barely touch the threshold of cultivation. Such an opportunity was very rare for a normal Earth Essence or Fire Essence being.