After finding several logistics supply ships, I took Jing Ci and Venerable Jade into the seabed ruins.
After opening the back door of the Galaxy Battleship, I actually obtained more than just the location of the seabed ruins. I also found many records about the battleship's origins.
Just as I had thought, the Infinite Star Sea was one of the gateways to the Upper Realm, and its master had once been one of the visitors from the Upper Star Sea.
It was said that quite a few factions had descended from the Upper Star Sea back then, but most had come to explore resources unavailable in the Upper Realm.
However, as time passed and their exploration went deeper, the upper realm cultivators discovered that their sacrifices were not proportional to their gains. Opening the passage between the Upper and Lower Star Seas required immense energy to tear through the spacetime of the star seas.
Thus, battleships were practically the only choice. After all, neither earth essence artifacts nor heavenly essence artifacts were currently powerful enough to tear open a passage through the Upper Star Sea.
This meant that every trip in or out required an enormous amount of energy. As a result, large-scale exploration gradually came to an end. Most of the upper realm cultivators returned to the Upper Star Sea, while only a very small number remained behind, either because their explorations had failed or because the resources they had consumed outweighed their gains.
Of course, there were also beings who disliked fierce competition and chose to stay.
However, adapting to the Lower Star Sea came at a price. Aside from the chaotic power that was gradually extracted and dispersed after exploration ceased, the Lower Star Sea also returned to its original position.
This threw all the stragglers into