Within the entire Primordial Spirit Sect, the only one who broke through the Domain Saint Realm and reached the Cave Spirit Realm was the Sect Master, Mu Yin. This wasn't because the resources and spiritual medicine given by the Cangqiong Immortal Palace were only sufficient to nurture Mu Yin to such a level, but because of Mu Yin's selfishness at play.
Mu Yin knew how he came to power; he completely rose by flattering the Cangqiong Immortal Palace. So, Mu Yin feared that if another Cave Spirit Realm expert appeared within the sect, they might replace him. Therefore, he hoarded all the resources that could lead to a breakthrough for himself, not sharing them with anyone else.
