Lin Chen had his own understanding of the changes in his Sea of Knowledge.
The spiritual power stored in the Sea of Knowledge had no attribute, and directly using this power, one could release spells of various elements, but as this spiritual power was attribute-less, only simple, low-level spells or divine powers could be released.
When a Dao Crystal was formed, however, it was entirely different. They were the materialization and evolution of the Way of the Five Elements. When attribute-less spiritual power passed through the transformation of a Dao Crystal, it would become the corresponding Five Elements Power, then release the corresponding spells and divine powers, not only increasing the power countless times but also enabling the release of more complex and profound divine powers.
