Book of All Jobs

Introduction to the work After traveling through time and becoming the son of a nobleman guarding a border castle, Lorne thought he would be at his peak at the beginning, but he found out that his "Frost Shield Castle" was actually a huge black hole of debt. His father is a five-star warrior, and his mother is a four-star mage. The family has thousands of books, but even buying a box of arrowheads has to be paid on credit. The empire's supplies are in arrears every year, the northern monsters move south year after year, and the aging defense line is already on the verge of collapse. Fortunately, he awakened the [Book of All Jobs]. This is not a quick fix. It doesn't give materials, it doesn't give money, it doesn't give teachers, and it doesn't help him pass the exam. It's cold, precise, and does only one thing - parse errors. "The spell model collapsed? No, it was the magic power overflowing from the third node." "The inscription runes are broken? No, it's because the underlying pressure-bearing structure has aged." "Failed to refine the potion? No, it was because the heat fluctuated too quickly and the main ingredients were put in at the wrong time." When the winter beast tide arrived early and the supply caravan had not yet arrived, and everyone thought that this border military fort was about to be removed from the empire's map, Lorne stood under the broken city wall and opened the Book of All Jobs that only he could see. What others see as a desperate situation is his first drawing. From the mage apprentices of Frostshield Castle to the border aliens of the Imperial Academy; from repairing an old military fortress to leveraging the knowledge monopoly of the entire professional civilization. He is based on being a mage and has practiced all kinds of skills. Eventually, this Frostshield Castle, forgotten by the world, was transformed into an important northern city that shook the empire.