The name of this article wasn't revealed in the novel and instead was given by editors of the wiki as substitute for lack thereof.
It is a Physique Merit Law for the Furious Immortal Tyrannical Physique. It was created by Lion Monarch Ba Xian. He left it for his descendants, but eventually it was lost.
Li Qiye visited the Ancient Heavenly Corpse Burial Ground and obtained the manual for this law from Lion Monarch Ba Xian. Later on he gave it to Monarch's last descendant, Lion's Roar Heavenly King.