The Natural Enemy of the Undead Is the Cement Coffin

Yunxing is a peaceful world where monsters and demons are everywhere, and technology and weirdness coexist. But one day, the peace and tranquility was broken. "Excuse me, Mr. Chang Yu, a group of immortal monsters suddenly appeared on Yunxing recently. As the chief strategic advisor of the Federation, do you have any methods to deal with them? " "Do you even need to ask? Of course they will be put into cement coffins." . . . "Mr. Chang Yu is such a genius. This method really works." "Yes, by the way, why are these monsters coming to Yunxing?" "They say they are here to save the world." "What?!" "Oh, by the way, as the chief strategic advisor of the Federation, Mr. Chang Yu, how do you deal with the imminent destruction of the world?"