The most crucial factor is the development of the Technique of Human Body Secret Treasure. The speed of cultivation can't be compared to the Immortal Way handed down by the Immortal Venerable.
When Li Fan looked up this information in books, he discovered that the difficulty of developing the Human Body Secret Treasure grows exponentially once its power approaches that of the Golden Core Realm.
It's as if an invisible shackle was added, and even making a tiny advancement comes with a very high cost.
The returns from cultivating Immortal Way is far greater than that of developing the Human Body Secret Treasure with the same amount of energy.
After all, how can the power of Immortal Law, which can draw on the energy laws of Heaven and Earth, be compared to the power of the human body alone?
What's Blood Rebirth compared to the invincibility and immortality of a cultivator after Nascent Soul?
