All My Elves Are Geniuses

When Lan Lan traveled through time, he thought it would be a utopia, but unexpectedly it turned out to be an elven world that suffered an inexplicable disaster. The boundless no-man's land is ruled by brutal elves. Human beings live in a corner and can only rely on the still clear elves to survive. But after awakening to the Chosen System, he found a way out of danger. On the left is a powerful elf with a chosen identity, and on the right is a mysterious and unknown ancient ruin. Consciously act as a grandfather and lead the chosen ones of this era to fight against potential dangers. "Ninini?" The snake-printed bear looked at the elf secret book in front of him and suddenly realized a destructive death ray. "Stop it, Nini! Those are friendly forces!" Lan Lan said that as an old man, he was really worried.