Eastern Civilization

"Come now, Percy. What you call Western Civilization... is a living force, collective consciousness that has burned bright for thousands of years. The gods are part of it, [a] fire started in Greece. The heart of the fire moved to Rome, and so did the gods... wherever the flame was brightest, the gods were there. They are now in your United States. Look at your symbol, the eagle of Zeus. Look at the statue of Prometheus in Rockfeller Center... like it or not—America is now the heart of the flame. It is the great power of the west. And so Olympus is here."

- Chiron

Eastern Civilization is a metaphysical force which moves with the flow of civilization. It is the pure essence of eastern mankind's culture and connects together everything that constitutes humanity's collective spirit and civilization. Occasionally referred to as the "flame" by gods, demigods, and monsters, this force moves with the center of human prosperity and influence in the Eastern world, and was originally founded in China during the Xian dynasty. From there, it was carried by Yuqiang, the chinese god of wind, to Japan with the death of Emperor Jimmu, and has since changed several times between China and Japan. Unlike the Western Civilization, which has often changed its center between several places throughout the last thousands of years, the center of the eastern "flame" has been changing solely between Japan and China ever since the time of Emperor Jimmu, the first Emperor of Japan, which was around 660 BC.

The japanese and chinese gods are intimately connected to Eastern Civilization as they are both its source and its embodiment. Since the rise of the Xia dynasty around 2000 and 1600 BC, when the gods resided on Mount Song, their home has also shifted location to correspond with the epicenter of human society in the Eastern world. This connection resulted in a profound effect on the gods and mortal civilization. Should Eastern Civilization decline, the eastern gods would be severely weakened, and if the gods order was overthrown, then human civilization would unravel at the seams, degenerating into chaos.

Just like the Western Civilization, when Eastern Civilization shifts from one place to another, certain aspects go with it, such as the entrances to the underworld. In a similar way to its western counterpart, the Eastern Civilization has its own underworld and heaven, making it impossible or very difficult for the two worlds to meet each other. It's known that, should a god or goddess ever cross the line between Eastern and Western civilizations, their powers shall be taken away while they're inside Eastern/Western Civilization.

Trivia

 * Unlike the Western one, Eastern Civilization has only shifted between two places, China and Japan, since it was first created.
 * If a western god come into Eastern Civilization, their powers shall be taken away and the god will me made human for the time he does not go back. In a similar way, should a eastern god cross the line to Western Civilization, they will be stripped from their godhood. This prevents the eastern and western gods from warring each other.