The technology of energy bodies.
Only now had they more or less fully absorbed everything they had gained from this expedition into higher-dimensional space.
The days that followed were uneventful. The Empire's trade with the Tattapo Tribe continued, with hundreds of thousands of Dark Eldar NPCs sold to these higher-dimensional energy bodies as goods each month.
In return, the Empire received precious materials from higher-dimensional space. They even sold the routes to several higher-dimensional floating islands. After several trades, the Empire had acquired five floating islands in all. The largest had a diameter of over 1,200 kilometers, while the smallest was barely five kilometers across.
These floating islands of various sizes not only provided the Empire with about five cubic units of precious higher-dimensional materials each year, but also housed Star Spirits who, with the aid of instruments and equipment, conducted extensive research into higher-dimensional space. A great deal of data was transmitted to the Imperial Academy of Sciences. In recent years, the Empire's research into higher-dimensional space had already surpassed the total of the previous two hundred years.
Construction of the defensive systems across the Four Great Galactic Arms had never stopped. High-end Prime Force Warships and equipment were combined with low-end, inexpensive pure-tech warships and equipment, spreading between star systems at an astonishing pace. After only a few decades of construction, the entire Galactic Arm had been made as secure as an iron fortress by humanity. The Tide of Darkness came less frequently and on a smaller scale, gradually giving way to the expansion of civilization.
In the blink of an eye, more than thirty years passed. The Emperor, who had been exploring the mysteries of the universe within the Divine Realm, suddenly felt a pang in his heart and came back to himself from his meditation.
"It's