The Most Ruthless Person in the Apocalypse

How to survive in the apocalypse? This is definitely a question, but what if someone like Lu has survived in the apocalypse for a period of time and then comes back again? Is that still not a problem? After rebirth, survival is not a big issue, but seizing the time to race is the issue. Let's see how Mr. Lu uses his knowledge from his past life to have fun in the apocalypse... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.