In the forbidden area of the immortal faction, around the sect master Chen Haoren and Luo Wei, some runes seemed to be condensing around them. If Musk was here and saw them he would be shocked as these runes were more complicated, and connected to form a structure of chains.
Looking at it, the ancestor Mu Shen seemed to be slightly startled at the comprehension of the two and said in surprise, " Profundities of Heaven and Earth!"
Indeed, this was the profundities of heaven and earth that people at the sect master's level seem to pursue. It is on a very high level and it is the way to control the power of heaven and earth, unlike in lower domains, where Nivarna(Emperor) level experts comprehend skills and dare to call them laws.