Is the End of the World Coming Today?

Chu Liang traveled through time and came to a world where martial arts were respected. Living in troubled times, human life is like an ant. The strong will become strong, the weak will perish. In this damn troubled world, only fists are the truth. Fortunately, there is no unstoppable path, and the apocalyptic system is bound. Chu Liang slapped a fly to death. [Congratulations on killing a blue demon fly, health +0.1%] Chu Liang crushed a cockroach to death. [Congratulations on killing a level 1 mutant cockroach, health +0.02%] Chu Liang kicked a mouse to death. [Congratulations on killing the level 1 mutant demon rat, health +1%] Until many years later, Chu Liang stared at the night sky and fell into deep thought. Why hasn't the end of the world come yet?