What do you mean the world of mortals is deepest?

Deep in time and space. The world of mortals refers to a chaotic and colorful world, with both the spread of space and the extension of time. Deep, just represents an emotion. In the deepest part of the world of mortals, that is, in the depths of time and space. The deepest encounter in the world of mortals is a strong rhetoric about this encounter, indicating that fate is hard to come by. As for how deep, it depends on understanding. But this meeting is unforgettable.