This Wizard Doesn't Cast Spells, He Draws Drawings

Cheng Yuan, a 28-year-old master of mechanical engineering, died suddenly while working overtime and time-traveled into Elliot Gray, the "witch's brother" wanted by the Vatican. The magic of this world was lost after the "Tide of Ashes" three hundred years ago. The Holy See monopolized knowledge and hunted all spellcasters. But Cheng Yuan discovered that the shabby magic book he carried with him could "analyze" any magical phenomenon and disassemble it into a visible "magic circuit diagram" - and what he was best at was reading pictures, changing pictures, and drawing drawings. Heating technique? Eliminate redundant loops and double efficiency. Fire magic? Transformed into a constant temperature furnace, the smelting cost is cut in half. Holy light confinement technique? Use reverse analysis to find the weakness and lock the Church Warrior with your backhand. When everyone regards magic as a "god gift or curse", Cheng Yuan only asks three questions: Where does the energy come from? How to take the path? Can it be mass produced? He started from a broken blacksmith shop in a border town, used "engineering magic" to leverage the trade chain, attract followers, established an ashes workshop, and founded the first magic engineering academy in the mainland. The Holy See said "magic is forbidden fruit", so he allowed every child to see the magic circuit diagram; the Holy See said "talent determines everything", so he used standardized production to prove that knowledge is the real power. However, when he came across the truth about the "Tide of Ashes", he discovered that the catastrophe three hundred years ago was not a natural disaster at all, but a man-made domination scam. What he wants to do is not just stay alive - he wants to light up the magic of the entire continent again, even if the cost is to burn every page of the old world.