Though Jiang Yifan was trained by a mentor who was an atheist, it was obvious that Jiang Yifan himself was not an atheist. Therefore, Jiang Yifan's understanding of what Ye Xinyan said was somewhat biased.
The vast cosmos, the changing seasons, and the ethereal rulers had nothing to do with each other; when astrophysics reached a certain level, these phenomena were given clear explanations, and hence lost their mystique.
Similarly, souls and spirits were only associated with deities when people didn't understand them. If technology advanced to a certain level and these concepts of the soul became material, then traces of the soul might also be found.
Perhaps sensing Ye Xinyan's skepticism, Jiang Yifan asked, "You don't believe?" His tone held an undisguised astonishment, as he thought she definitely would, given her current situation.