Buttface said he went back to the East Continent out of sheer boredom and planned to cultivate justice and save people from suffering. However, he found the East Continent, which was full of evil, to be hopeless. So, he went to the Celestial Burial Valley to relieve his boredom. On the spur of the moment, he entered the Celestial Burial Valley and tried to check whether a Celestial was really buried there.
He never expected he was walking into a killing spell Array, which was full of dangerous Void Cracks. Generally speaking, a Void Crack could be used to travel between two places like the teleportation device. However, the Void Cracks that were as large as needles or swords were extremely dangerous for cultivators. Once a cultivator was hit by a Void Crack, part of its body would be teleported to another place, no matter how powerful the cultivator's physique was!