"Here it is." he said, returning to his seat. "Remember what I was saying before, about the pentagram? The five-pointed pattern reminds me of the writings of the fourth-century Chinese alchemist Ko Hung." Aziz leafed through the book as he talked. "He postulated not four elements, but five: water, fire, earth, wood, and metal. His spell formulas are nonsense—no hermetic formula that omits the elemental energy of air stands a chance of working properly. It’s simply too unbalanced. And despite extensive research, no ‘fifth element’ has ever been found. It’s simply an impossibility.