I Just Took a Trade Certification Exam, and You Want Me to Build a Star Destroyer?

My name is Chen Mo. I'm a first-year automotive repair student at Jiangnan Vocational Technical College. After failing the college entrance exams and facing the cold stares of my relatives, my only way to relieve stress was playing a hardcore strategy game called Starfront Defense, where I saved a human fleet on the brink of extinction. To fight off the insectoid horde, I not only spent all 300 yuan of my living allowance on the game, but also devoured Aerodynamics, High-Energy Physics, and Introduction to Interstellar Engines at the library. I had it all figured out: once I beat the game, I'd quit, practice tightening bolts, and try to earn an advanced mechanic's certificate so I could make a living. Then, during a practical class, the teacher pointed at a news report about the Eagle Nation's new fighter jet and sighed. “That's what you call the crown jewel of industry. What we've got is scrap that needs fixing.” Looking at the 【Pulse Detonation Engine】 I'd just finished developing on my phone, I raised my hand without thinking. “Teacher... if I can build this engine, the one that doesn't burn fuel and has ten times the thrust, could the school give me a mechanic's certificate?” The teacher laughed. “If you can build that, I'll eat this tire!” The whole class burst into laughter. Half a month later, a convoy of heavily armed military vehicles sealed off the technical school. Looking at the principal and teachers, their faces deathly pale, I raised my trembling hand. “I'm really not an arms dealer... I just wanted a certificate so I could find a job...” The major general looked at me. “What certificate? Come with me! You're the chief engineer of a top-secret national project!”