It was said that star beasts cultivated both their souls and bodies. As they grew older, they would increase their cultivation and soul at the same time.
In fact, that could not be blamed on the human race. The human race's natural strength was weak. The first thing they needed to do was to increase their own strength and survive. Only then could they consider advancing to a stronger level.
By cultivating their spiritual energy cultivation and strengthening their physical strength, they would wait until they were at Xiantian ninth grade before charging into the soul aspect. From there, they would be able to raise their strength to the King realm, which was safer for the human race.
Otherwise, the human race would be able to cultivate their soul and body at the same time like the star beasts. It would have taken them 200 years to reach the divine grandmaster rank.