In the doomsday, as the aurora appeared all over the world, human beings were forced to start evolution. Zombies ran rampant, and polar beasts invaded. Before the doomsday came, Captain Li Xun obtained the sacrificial system and started the evolution of 23 pairs of chromosomes. Sacrifice a container of books
, get hunting proficiency and weapon proficiency; sacrifice a pirate corpse, get special soldier career; sacrifice a complete polar beast, get wormhole capsule production method. PS: IQ is online, feel free to enter the pit.