In the Domain of Void, the Fae have already constructed a Void Realm Portal.
The movement within the Domain of Void is essentially driven by 'the desire of thought'; merely by imagining, one can reach a destination. If the thought is deep and focused enough, ethereal beings can even teleport directly to the metaphysical location within the Domain of Void.
The Voidrealm Machine God utilizes this method to traverse and survey the Whole Terra.
If the Fae had no body, they could move like this. Unfortunately, Ian, Hua'an, and Frozen Fish all have physical forms, thus they must construct a portal to perform a Void Jump.
Moreover, Ian's Aether Armament, Supreme Spirit, is also intended to be sent to the Fairy Homeland, allowing these master craftsmen acclaimed by the Tara Confederation to examine it and identify any areas that need improvement.
Forget anything else; if you can freeload on craftsmanship, then do so.
"That's really nice!"
