In the World of Cultivation, a strong foundation was everything. It was the bedrock upon which all future advancement was built.
A cultivator's foundation determined not just their initial strength, but their potential for future growth, their ability to withstand the pressures of higher realms, and even their capacity to use the comprehended techniques to use.
After all, without a solid foundation, the physical body would have many microscopic weaknesses which would eventually lead to insurmountable bottlenecks or even cultivation deviation.
Many cultivators, in their haste to advance, neglected their initial foundation at the Body Strengthening Realm.
Many pushed forward recklessly, leaving behind irreversible flaws which would haunt them for the rest of their cultivation journey.