Qing Baizi cultivated a spell that allows him to observe Elixir Qi.
Pill Masters spend years accompanied by the Pill Furnace, continuously practicing alchemy, day after day, year after year, accumulating a unique kind of aura within—Elixir Qi.
Elixir Qi is intangible and without substance, and cannot be perceived by ordinary means. It is like a second face for the Pill Master, recording the alchemist's lifelong journey in alchemy.
If a person's Elixir Qi is dense, they must be diligent and hardworking in alchemy. Those with sparse Elixir Qi may have high cultivation, but might not have much achievement in the art of alchemy.
Moreover, the type, color, temperature, and fluctuations of Elixir Qi can reflect the Pill Master's expertise.
