Today, Emperor Xia was dressed in simple imperial attire.
The top is black, representing the sky at dawn, when the sun has yet to rise. The bottom is yellow in color, representing the land that was naturally yellow in color. However, this analogy did not apply to the Netherworld, as the Netherworld is more to the color of greenish-black.
Yellow soil was only found in the homeland of Xia tribe's predecessors, it has been passed down as a tradition. That generation of predecessors could not return to their hometown until their death, perhaps the homeland of the Xia tribe had long perished.
After so long, the people of the Xia tribe no longer reminisced the hometown they have never seen before. Daxia has occupied the center of the Netherworld, conquering many. But there had been no major change in territory, for no other reason other than that other places were deemed undesirable.