What did the Upper Realm of the Divine Realm mean in novels?

The upper realm of the divine realm usually referred to the divine realm or the immortal world in myths, legends, novels, and other works. It was a form of existence relative to the mortal world. The Upper Realm was usually considered to be a more advanced, mysterious, and perfect form of existence than the mortal world. It had more abundant resources and a wider space. In novels, the Upper Realm was usually considered to be the place where immortals lived. There were all kinds of mysterious and wonderful existences and scenes, full of aura and vitality. The Upper Realm was often used to describe an existence that transcended reality and represented a more noble and mysterious spiritual level.