As for the other worlds discovered during the Heavenly Court's expansion, no matter what path of Cultivation they originally followed, they were destined to become vassals to the Divine Continent's Cultivation system, integrating into it like nutrients, but they could absolutely never replace the position of the Divine Continent system.
For True Immortals, their path to cultivation emphasized the Way over skill; divine power techniques were indeed critical during combat and enemy confrontations, but the core was their own Way, which could be shaken not one bit and stood as their foundation.
The might of divine power techniques was unleashed by leveraging a powerful foundation; possessing grand divine power skills without the support of one's own Taoist Skills was futile.
On the contrary, with a strong foundation and a powerful personal Way, even the most common and ordinary divine power skills could exhibit unimaginable might.