There Is a Nuclear Bomb Hidden in the Dantian, I Raised My Hand and Fired the Laser Cannon

Xu Yuan, the youngest physics professor in China, suddenly encountered a car accident. When he woke up, he found that he had traveled back in time to a useless disciple of a third-rate sect in the world of immortality. However, he counterattacked and broke the mirror along the way, rubbed nuclear weapons with his hands, and climbed the road alone.