The Ancient Earth Era was comprised of numerous civilizations and ethnicities, which had given rise to countless myths and legends. For example, the Chinese civilization, Babylonian civilization, Egyptian civilization…
As for the Chinese civilization, the divine figures in the legends and myths were different compared to the other civilizations.
The Chinese civilization's myths and legends were the most special one.
For the characters such as—Gods (神), Immortals (仙), and Buddhas (佛)—all of them had the word 'human' (人) in one of the many strokes that made up their characters. These divine figures in the Chinese myths and legends weren't figments of imagination; they were all evolved from humans.
Gods, Saints, Immortals, Buddhas—could everyone become them?
Maybe it was precisely this spirit of striving unremittingly, believing the human could conquer over the heavens, that allowed the Chinese civilization to last so long until the Interstellar Era.