In Order to Work and Study, I Turned in Black Technology

After traveling through time, Gao Lang has his own god-level system and uses the technology provided by this system. He found that he would be rewarded whenever he rectified society's unhealthy trends, so he punched foreign students, kicked fairies, rectified popular celebrities, and slapped shameless musicians in the face. After each rectification, he can obtain black technology and hand it over to the country, such as new materials for fighter jets, controllable nuclear fusion, photolithography machines, etc.