The Investiture of the Gods universe is an exercise in boundless imagination built upon the Investiture of the Gods.
Let us suppose
From ancient times until the founding of the Xia dynasty was the First Civilization Era, also known as the Era of the Gods.
After gaining power, King Yu used a doomsday pulse weapon codenamed “Great Flood” to wipe out the gods. He replaced rule for the common good with hereditary rule, ushering in the Second Civilization Era, which lasted until the fall of the Eastern Zhou dynasty.
At the end of the Western Zhou, conflicts between rival powers devastated nearly all of China. The Son of Heaven was forced to move the capital, ushering in a new era of civilization. From the Eastern Zhou to the present is the Third Civilization Era.
The story of the Investiture of the Gods universe begins in the late Shang dynasty, during the Second Civilization Era, and slowly unfolds from there.