Hundred Meridian Refinement Mantra was a technique from an outer page of the Golden Jade Tome.
This technique used the person’s meridians, flesh, and bones to forge their bodies into a Buddhist Impervious Vajra Body. This would make their limbs would possess world-shaking abilities and their bodies would approach near immortality.[1351]
One of the techniques that was mentioned in the Hundred Meridians Treasure Refinement Mantra allowed Han Li to condense the Divine Essencefused Mountain and the Unbreakable Cinque Devils into his two hands.[1372]
In the Immortal Realm Arc, Han Li managed to find out that Hundred Meridians Refinement Mantra is actually a secret technique from Hundred Creations Mountain.