In 2023, military engineer Chang Haonan is reborn back to 1996, his university days. At the darkest hour before the rise of China's military industry, he obtains a "Research Guidance System" comparable to the strongest mentor. Starting with the improvement of a fighter jet, he embarks on a scientific research path completely different from his past life. Aircraft engines, phased array radars, nuclear-powered aircraft carriers, advanced semiconductors... these are just the beginning. Turning deserts into oases, transforming natural barriers into thoroughfares, reaching for the moon and exploring the oceans—these are not the end either. [System: Some say teaching a man to fish is better than giving him a fish, but I'm different.] [Chang Haonan: ???] [System: I can give both.]