Is magic really a wish machine? No! In a universe where magic really exists, the ultimate essence of magic must be as simple and beautiful as the laws of physics. This is a mass-produced magic warfare tool. People know the ultimate magic The essence of the story. But so what? Just like birds can fly without knowing aerodynamics, magicians do not need to understand the ultimate nature of magic to use magic. Knowing the ultimate nature of magic does not mean that the tool man can transform himself Become a great magician. But the desire for knowledge is the instinct of human beings, and curiosity is the first driving force of human civilization. Even if it is magic that should have no reason at all, human beings hope to understand the inner laws of operation. The exploration of the ultimate essence does not require any reason! The story in the book takes place in an era where steel and gunpowder dance together.