"Is this the Pill Realm...?"
Cao Ying looked around and happened to see the vast, boundless plains, as well as the outline of the mountain range at their end.
Even she was entering the Pill Realm for the first time.
She was quite curious about everything within it.
"But the energy here is exceptionally abundant. Still, there seem to be some violent elements mixed within it. Could that be because the Pill Realm has fallen into decay?"
Cao Ying grasped at the air with her jade hand, sensing the heaven and earth energy that differed greatly from the outside world, and could not help murmuring softly.
In terms of its environment alone, the Pill Realm was indeed more dangerous than the outside world.
Yet its energy was also far more abundant.
Lu Yunxiao also reached out and grabbed a handful of heaven and earth energy. Sensing the faint decay and violence within it, his expression remained unchanged.
Generally speaking, opening up a space was a heaven-defying ability possessed only by Dou Saint Strong Persons.
However, even after a space had been successfully opened, it still required constant maintenance. Otherwise, it would gradually decline sooner or later.
Clearly, no Dou Saint strong person had maintained this Pill Realm for a very long time.
Coupled with the passage of time, it was not strange for it to have become what it was today.
Unlike his Inner World, which he had never maintained either, it possessed the mutual generation and evolution of Five Elements Power, along with the World Tree standing guard over it.
It did not require his maintenance at all. His Inner World was constantly in a stage of rapid development.
That was the power of the World Tree.
This Pill Realm could not be compared to his Inner World at