Young Dragon Shovel Officer

I didn't expect that when I graduated with a Ph. D. In Physics, had a prosperous career, had a son and a daughter, and a harmonious family, and was very proud of my life, I would accidentally travel through time due to an experiment. Regardless of time-travel, the system is not allowed to travel, and the dragon is forced to shovel shit. In the physical sense, what does this mean? People rely on the mountains to eat the mountains, rely on the sea to eat the sea, rely on the system to kill the sun and the world, I can only rely on shit to eat... Evil God, don't run away, I'll kill you with dragon excrement.