1798. Suppression
The main issue with the void was the lack of energy. Hybrids and magical beasts had it better since they could rely on the large stash of energy contained in their bodies to keep fighting, but the same didn't apply to the cultivators.
Flying, exploring, and overcoming struggles forced the group to deplete energy that they couldn't refill through natural methods. They had to rely on their items or King Elbas' tools to keep their centers of power full, but they would eventually end.
The consumption accelerated depending on the struggles that they had to overcome. The battle against the jellyfish had forced them to use a lot of energy, which would require them to rely on their stashes. The mission wasn't even over, and they also had to consider the return in their calculations.