"In the world, there truly exists the Fifteenth Tribulation Heaven-grade Elixir," Master Ding said. "The Fifteenth Tribulation Heaven-grade Elixir is called the Celestial Harmony Elixir!"
"Celestial Harmony Elixir!" Yang Xiaotian was surprised, indeed, there is the Fifteenth Tribulation Heaven-grade Elixir in the world.
"Celestial Harmony Elixir, meaning harmony created by heaven," Master Ding explained. "However, Celestial Harmony Elixir has never appeared in the lower realm. Without Chaos Divine Fire, it's simply impossible to refine the Fifteenth Tribulation Heaven-grade Elixir."
It means that only Chaos Divine Fire can refine the Fifteenth Tribulation Heaven-grade Elixir.
Knowing that the world indeed has the Fifteenth Tribulation Heaven-grade Elixir, Yang Xiaotian's heart surged with excitement. If he could obtain another Chaos Divine Fire, then he could refine it.