This kind of mystic realm space was different. Not only was it extremely large, it could also allow people to survive inside. Once it was modified, one could basically live very comfortably.
It was said that the opening of a mystic realm space required one to comprehend the law of space, coupled with some special methods and other harsh conditions.
The reason why it was said to be so was because the method to open up a mystic space had been lost in the magical world for many years.
Legend had it that in ancient times, those Divine Magi were all able to open up their own mystic space and transform it into an excellent place with rich energy for cultivation… Currently, the few remaining mystic spaces in the magical world had all been occupied by the top powerful forces.
Currently, many Great Archmagi would not be able to see the magical power world's mystic realms even if they exhausted their entire lives.