This blood curse mark is extremely high level. Within the Blood Fiend Sect, only truly outstanding genius disciples, or those with special identities and noble lineage, could leave behind such a mark.,Only the last one left, Blood Slaughter Gate never knew who killed him, but now they know.,"I killed a disciple of the Blood Fiend Sect before, and he left me with the Blood Fiend Mark," Su Xin said.。