"I never expected this Blade Lord to have cultivated an Earth-grade defense martial skill!"
"And it doesn't seem to be an ordinary Earth-grade defense martial skill either... If it were a low-grade Earth-grade defense martial skill, even if cultivated to the consummation realm, it might not be able to withstand Young Master Gao's attack."
"Earth-grade defense martial skills are best cultivated using the 'momentum of the earth' and the 'Earth Concept'... Earth-grade defense martial skills cultivated using other types of momentum or concepts ultimately fall rather short."
Chapter 580