Endless Eastern Sea…
It was rumored that the size of the Endless Eastern Sea was unknown. In the history of the human countries, there were records of countless explorations in the sea. However, there were no records of any exploration that extended past one hundred thousand miles.
It was because the Endless Eastern Sea was filled with countless miraculous and unpredictable fortuitous opportunities. Thus, the Three Eastern Empires that were the closest to the Endless Eastern Sea were the main groups to explore it.
The other human powerhouses were too far from the Endless Eastern Sea so they could not deliver the giant ships to the sea. Secondly, they could not travel through the vast border of the Three Empires to reach the border of the Endless Eastern Sea.