Bab 265: The Cauldron of Chaos, Chapters 205-207

There's a saying: neither copper nor iron nor steel, hidden under Mount Sumeru. Is there no need for yin and yang to refine it, nor water and fire to temper its edge? "Executing Immortal" is sharp, "Slaughter Immortal" annihilates, "Trap Immortal" emits red light everywhere; "Absolute Immortal" changes unpredictably, soaking the clothes of the Great Luo Immortals with blood.

Indeed, these are the famous Zhu Xian Four Swords, the most deadly among the Four Great Innate Treasures! When the swords strike together, combined with the Executing Immortal Formation Diagram, their power is unstoppable and overwhelming, impenetrable unless the Four Saints make their move.