I Just Traveled Through Time, Refined the Waste Elixir and Fed It to the Saint, and She Became the Empress.

Ye Guchen, a member of the Earth Society, traveled through the fantasy world with his soul and became an alchemy apprentice of the Qingyun Sect who was about to be eliminated from the bottom position. In the final test that decided his fate, he made a furnace of "waste elixir" as black as carbon in front of everyone, which made the whole audience burst into laughter.