People are different.
Worlds too have their variations.
If the Mountain Sea Realm is a Small Thousand World in its infancy, then the Mystic Realm is a Great Thousand World approaching its twilight years.
Not to mention other things, just the size alone is vastly larger.
The territory of one Su Ling Sect alone is approximately the size of the Eastern Wasteland Immortal Cultivation World back then, which is why it can support so many High-Order Cultivators.
Naturally, the space power of the Mystic Realm far exceeds that of the Mountain Sea Realm.
This can be seen from when Luo Chen first entered the Mystic Realm and battled with an unfortunate Refining Void Demon Monarch coincidentally undergoing a tribulation.
The man was definitely a presence at the Peak of the Void Refining Stage!
The fight between Luo Chen and him, if placed in the Mountain Sea Realm, would likely have torn the sky and shattered the space.
But in the end, there was not much disturbance.
