The Spirit Realm was the process of soul molding, using the power of the Upanishad he had perceived to enter the Spirit Realm to remold the soul, making it adapt to that change in power. That's how the host soul could use that power when the warrior entered a new realm.
The power Shi Yan had perceived was the space power.
During the soul molding process, space energy was led and fused with the Soul Consciousness, which gave it the abilities of space. However, if the host soul wanted to use the real power of space, it required a deeper understanding and a long time of comprehending.
Only spending time to sense and slowly perceive the space power could help the host soul use it fluently.
Shi Yan waked up, feeling feeble.
The space slit next to him had disappeared a long time ago, leaving the mountain flank gloomy as before.
Taking a look at the inside of his body, Shi Yan's eyes lit up.
