It was not only useful to Sages, even after becoming a Daolord or even a demigod, this combat form could allow one's combat strength to reach a height that ordinary people could not reach. After all, be it Daolords or demigods, they were at their strongest when they were in their domains.
This was also the main reason why Demigods Xingkui and Mu Wen had chosen to hide in their own domains. If Heavenly King Yao Xi was also in her domain back then, she might not die.
Although fusing his domain into his body would increase his combat strength greatly, the slumber of everyone in the domain would cause their cultivation to stagnate and they would not be able to continue increasing their strength. It would not affect them much in the short term.
But as time passed, Xiao Shi's development would definitely be greatly hindered. Especially the Heavenly Mystery Palace. Currently, the important members of the Heavenly Mystery Palace were all in Xiao Shi's domain.
