When the Black Hurricane arrived at the foot of the Arctic Summit, he was startled to see nothing but thick fog in his way.
According to the map he possessed, there should be a clear way to direct him to his destination. So how come there was such thick fog in his way?
Moreover, he sensed the presence of spatial tears in this fog. It was his Demon King's spirit that instinctively sensed those Spatial Tears and warned him of stepping into that fog.
His instincts were accurate. The fog was something Azaroth created through the use of his arrays.
These arrays used the laws in the limited territory and opened Spatial Tears. A warrior could use those arrays to manipulate the location of spatial tears.
Naturally, Azaroth had prepared another couple of formations that prevented anyone else from accessing these Spatial Tears.