Just in terms of swordsmanship, even if she cannot use her Immortal Qi, Shangguan Hong can still defeat Fourth Realm enemies.
This Fourth Realm refers to Spirit Qi Masters.
There are many differences between Spirit Qi Masters and Cultivators, one of which is the unavoidable gap between the same realms.
Most Spirit Qi Masters smoothly transition from the First to the Fourth Realm. They only need to develop their Spirit Sea, drawing Spirit Qi from between Heaven and Earth. But starting from the Fifth Realm, it becomes as hard for Spirit Qi Masters to advance even a single step as it is to ascend to the heavens, because the nature of Qi Spirit is largely determined at birth. Therefore, the journey from the First to the Fourth Realm for Spirit Qi Masters is just an accumulation of quantity, and only reaching the Fifth Realm represents a qualitative breakthrough.
Immortal Cultivation, however, is different.
