It's rare to see Yuan Zhixia at a loss, and Li Cheng couldn't help but laugh inwardly. Indifferently, he said: "This is the Shadow Realm, which can be understood as the reflection of the real world.
Its range of maintenance is limited; as long as you run in one direction, sooner or later, you can escape and return to the real world."
In fact, this explanation is incomplete. According to Zhangsun Yao's explanation, the Shadow Realm is equivalent to the reflection of the real world and inherently exists without deliberate maintenance.
The act of opening the Shadow Realm is like tearing a hole in the curtain of the real world, pulling selected people and objects into it.
And what is called "maintaining the Shadow Realm" should actually refer to the Caster's action of keeping oneself and the selected people and objects continuously in the Shadow Realm.