The Deceit Realm only harvests the Spirit Realm once every long period because the growth of strong individuals in the Spirit Realm is too slow. Additionally, due to internal disunity and constant infighting between various factions, any promising talent is often targeted for elimination. Consequently, it takes a long time for a batch of strong individuals to emerge in the Spirit Realm. Before strong individuals in the Spirit Realm become numerous, Immortal Emperor Youlan and these Ancestors of the Strange have no desire to harvest.
For these Mysterious Lives, the stronger the existence, the more abundant the vitality within. Thus, every time they harvest the blood food from the Spirit Realm, they allow those human blood foods in the Spirit Realm a long period to grow.
