It was just like his old chariot's heart, but each spaceship's heart would require a different quality of energy sources. Some even would require a very high source of power, one that wasn't easily obtained or found.
According to her, if crystal mines were one of the most heated places in the universe, then the mines of high energy sources belonged to the same very short list.
It wasn't only that, but the loot armies got after fighting at the outer battlefield would always contain high energy source materials. And that was something that highlighted the importance of such a place in the eyes of Hye.
He learnt too much stuff, but the bitter fact still remained. It was hellishly difficult to obtain spaceships in normal ways. There wasn't any impact willing to sell them to a force that wasn't widely known and strong in the universe. And such forces were already so strong and ancient, not like Hye's newly built human kingdom.