According to the Wizard Alliance's standards in the Encyclopedia of the Wizarding World, void worlds were divided into four ranks based on their area, the completeness of their laws, and their strength: hidden gardens, Mystic Realms, Little Heavens, and Great Thousand Worlds.
From largest to smallest, Mystic Realms ranked second from the bottom.
Below Mystic Realms were hidden gardens. For instance, the hunting ground Zheng Qing used during the Freshman Competition was a hidden garden. Above Mystic Realms were Little Heaven Worlds and Great Thousand Worlds. The universe containing Blue Star belonged to a Great Thousand World.
In theory, hidden gardens covered less than a thousand square kilometers. Their ecosystems were already relatively complete and could accommodate Registered Wizards using their abilities. Mystic Realms, meanwhile, often spanned tens of thousands of square kilometers. Their laws were more complete, allowing distortions of time and space to occur—by comparison, if time or space became distorted in a hidden garden, that hidden garden would most likely shatter because it could not withstand such intense fluctuations.
Though the Small World before the black cat was not large, distortions of time and space had clearly appeared within it. Thus, in Fei Rui's records, it had been classified as a Mystic Realm.
"So this is distorted time and space." Colmar lifted her head and gazed up at the sky. Though her words contained a question, her tone was one of amazement.
The black cat raised his head as well, his pupils shining.
It was also his first time seeing the sun and moon hanging in the sky at the same time, with the moon even slightly larger and brighter than the sun. Standing at the cave entrance and looking out at that full moon, he even felt as though he were there in person.
But Zheng