Chapter 593: The ethereal opening realm

The word 'serene' was hidden, quiet, and profound.

Ethereal opening was the most important barrier in a Summoner's power system. If one didn't advance to ethereal opening, it would be difficult to reach that hidden and profound realm.

Before, Xia ping 'an didn't quite understand why ethereal opening was so important. It wasn't until he bathed in the ethereal opening divine spring and saw the earth-shaking changes that were happening in the secret altar that he finally had a slight understanding of it.

Tens of thousands of meters underground in the thousand bird plain, Xia Pingan melted a hard rock wall in a dense underground rock. He used the activation array disk to build a hidden shelter for himself in the rock wall. Then, he began to bathe in the Holy spring in the shelter.