More importantly, no matter where he was, he would have to take an extra step.
Going back to the concepts of wind and ocean, to manifest their powers in an environment that wasn't ideal for them, they could do preparatory work to modify the environment or use treasures in their Spatial Treasures to serve as a proxy. For instance, a bundle of fans or a vat of water. This meant that the majority of Resonance Stage cultivators didn't travel far to begin with, often sticking to their territory and modifying their homes, but if they did go out, they would carry a lot of treasures that would allow them to leverage their strength outside of their domain so they wouldn't be a helpless chicken when facing foes of a similar level. Di Tou similarly had to take an extra step, either concentrating and finding the 'essence' of the surroundings to call back to the Void, or using his Void Qi as a proxy.
