You Asked Me to Teach Physics, So Why Am I Building a Plasma Cannon by Hand?

You asked me to teach physics, so I built a plasma cannon by hand? During a livestreamed open class, Lin Yi, who had obtained a Black Tech System, built a plasma cannon by hand on the spot. As the plasma cannon fired up, it let out a deafening roar. The students were stunned. Even a professor in the audience found it unbelievable. That was because Lin Yi had written a series of equations on the blackboard, equations powerful enough to usher humanity into a new era. And this was only the beginning. All kinds of black technology continued to emerge from Lin Yi: bolters, power armor, Viking aircraft, siege tanks, Goliath combat robots, Thor armor, Dreadnought armor, battlecruisers... When a battlecruiser warped into the skies above the United States, the Yanks panicked completely! “When did Dragon Nation master this kind of technology? Is it too late for us to get on our knees now?”