There's a saying that a starving camel is bigger than a horse. Tang Ye and Li Disha are exactly that, a horse and a camel. Tang Ye grew up in the Great World, always subject to the limits of its destiny's energy. Thus, no matter how strong he became, he couldn't possibly catch up to a Gatekeeper Slave.
Gatekeeper Slaves are not limited by destiny's energy. The limitations they experience are the ultimate confines of destiny's energy for the entire heavens and Earth. Apart from being unable to ascend to immortality, they can achieve anything else. That's why they have levels of power like the Immortal Realm and Divine Passage Realm, whereas outside the Great World, there is only Qi Force, which, according to the Gatekeeper Slaves' hierarchy, is merely the Spirit Awakening Realm.
What is the Spirit Awakening Realm? It is the very beginning in terms of Spiritual Energy, where one can start to use Spiritual Energy to strengthen the body, the most basic cultivation realm.
