In Sky Spill Continent, within those that practiced martial arts, having the strength of a 1000 jins was considered a small accomplishment. Then the martial artist would go through Altering Muscle, Bone Forging, and Pulse Condensation. By the time the Body Transformation was completed, a martial artists strength could amount to 8000 jins, in which a small percent who were born with divine heavenly strength, there strength could amount to 10,000 jins.
This was the limit of strength. Even if one were a houtian master, their strength would not grow; they could only raise their true essence.
Then the after reaching xiantian, including the levels above, they would understand the true essence, and cultivate the soul. This was considered the correct path of martial arts.