Ling Chuxi being able to reach the ninth level of the tower of proving holiness was within his expectations, but also beyond his.
As a domain lord, bu Xingtian had naturally come to the ninth level of the tower of proving holiness and left his name there. Of course, he also knew that in order to reach the ninth level of the tower of proving holiness, one did not need to have one's own cultivation, but one's comprehension and mastery of the laws. Therefore, it was not enough for Ling Chuxi to be able to come up.
However, normally speaking, only venerable level experts had such comprehension of the laws. For example, all of the domain Lords were geniuses, but since ancient times, only a few of them who could be called heaven-defying geniuses had reached the ninth level of the tower of proving holiness with a God-level cultivation.