At this point, the Inner Core served as the heart of Demon Power storage, circulating it endlessly throughout the body.
In this stage, the Inner Core that had been formed was not yet stable; it had only just taken shape.
This pass stops a great many Top-tier Great Demons.
The gradual solidification of liquid Demon Power was manageable, but gathering the solidified essence of that power to form an Inner Core was extremely difficult.
Therefore, during this stage, Top-tier Great Demons would all prepare Crystal Condensation Pills in advance to use as Spiritual Items for the breakthrough.
With the aid of a Crystal Condensation Pill, as long as the user's Demon Power wasn't too impure and their foundation was decent, they could generally pass through safely.
Since Xu Chang'an had his panel, he also passed this stage with ease.
The third pass: the Heart Demon Pass!
Although it was called the Heart Demon Pass, it wasn't some kind of Heart Demon Illusion Realm.
