To the Yin people, the world is the world.
The world is everything before their eyes, the places they can walk to, they can see. This is true not only for the Yin people, but also for later Chu, Yu, and Chen people. Their concept of the strong is to ascend to the sky and become Immortals, their concept of death is to be buried underground and return to the earth, and even their understanding of ghosts is merely that lingering grievances keep them in the world until the grievances dissipate and they return to the heavens and the earth.
In general, everyone thinks that the world should be this way. The place they inhabit is the world itself.
This is evident in their choice of words: "the world", "under the heavens" — could there possibly be any place in this world not beneath this sky?
"Yes, there really might be."
Du Chengfeng raised a finger.
"Is there really only one world, or rather, only one universe?"
"If not, what else?"
The three Wu Zhaos looked utterly puzzled.
