Even those with the most stubborn physiques, when placed inside the Divine Realm for ten days to half a month and thoroughly bathed in Subspace's blessing from head to toe, would suddenly become sensitive to Spiritual Energy. Upon returning and coordinating with the system to undergo a training for a specific type of soldier, they were certain to become Spiritual Energy users.
Of course, there was no need to go to such extremes. Gu Hang wasn't aiming to create a society of all Spiritual Energy users. The Rage Owl Star, due to the presence of the Storm God Kingdom, naturally had a thinner veil to Subspace compared to other planets, which was why resources such as the Spiritualized Gas Field existed. Even more so, Gu Hang suspected that this Cult, that Cult, along with the Iron Men Rebellion, had much to do with the planet's thinner veil of reality.