In Martial Arts Cultivation, the gap between each Great Realm is immense, and the difference in strength is like heaven and earth. For instance, the Combat Power of an External Refining Expert is at least greater than ten people who have reached Great Success in Power. Meanwhile, ten people at the External Iron Bone Refining stage are no match for a newly-promoted Inner Master. They would likely be utterly crushed. Such is the disparity between them.
The stronger one's Martial Arts Cultivation becomes, the wider the gap between Great Realms grows.
This is also why Liu Xuan, the Sect Leader of the Cyan Yuan Sect, has always wanted to break through his Cultivation and become a Bone Marrow Cleansing Grandmaster.
Additionally, the Lifespan of a Bone Marrow Cleansing Grandmaster also increases, by at least sixty years. The gap between them is huge.
