Mechanical Ascension for Everyone's Job Change

Traveling to a world where everyone changes professions, when they awaken, others face popular options such as warriors and mages. There are even lucky ones who can awaken rare and hidden professions. The protagonist sadly has to choose between a farmer, a beggar, and a mechanic. As a time traveler, the protagonist resolutely chose a mechanic. In the eyes of others, this is a career that costs money to train in the early stage and has no future in the later stage. The protagonist instantly became the laughing stock of everyone and was ridiculed endlessly. But the protagonist relies on his past life memories and unique insights to constantly plan the development route of the mechanic and explore hidden potential. How does he break the shackles of his career and achieve a counterattack from being ridiculed to mechanical ascension and dominating the world? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.