All the buildings within Mountain Blacksmoke leaned towards a black color, even the Alchemy Chamber deep underground, made of Fiery Stone with strong fire resistance, was no exception.
Following Elder Sister Audrey, David Jones just entered the Alchemy Hall and saw Alchemy Chambers of the same size all around, emitting a faint fluorescence.
Unlike the suitable environment outside, the temperature inside the Alchemy Hall was extremely high, even with a hazy white smoke pervading the area.
Seeing curiosity on David's face, Audrey explained, "Deep in the Blacksmoke Mountains, there is a spread of mysterious and deadly underground fire. The mysterious smoke is the mist of ghostly fire brought into the Alchemy Chamber by Grau using the underground fire."
