About Me Being Asked to Beat Myself Up

"Times have changed, my lord." "Caliber is justice, and everything within the range is truth!" "What a day for nuclear peace..." This book is also called "About me being asked by me from another time and space to go to another world to beat myself" and "I Beat Myself". What? Time and space refutation? I have never heard of quantum mechanics. It doesn't make sense, is it parallel time and space? Seeing the knight holding a wave of sand wildly firing explosive bullets, the magician using magic to explain science, and the tank driven by a clone that shot a rocket as powerful as a rocket, Lin Ling began to fall into self-thinking about himself. This world seems to have been ruined, can I beat myself?