The bronze gourd of Yin and Yang was used to store the Darkest Soul-devouring Fires. Li Mu guessed that it was not arranged by Liuyun Wufeng. The gourd might belong to the Cosmic Emperor Deathless. Therefore, the Sword Savant said the gourd was stained with the aura of an emperor. It might be Cosmic Emperor Deathless's.

Only an emperor like the Sword Savant could erase the aura.

Soon, the Sword Savant finished refining and handed the gourd back to Li ...