The End of the World? Don't Panic! There Is an Invincible Shelter Just Like It

[No heroine + shelter + upgrade + farming management + decisive killing + invincibility] What the hell? When I woke up, I found that the whole world was in an apocalyptic disaster! And his roommate turned into a terrifying corpse! After Zhou Qi nearly killed his roommate who mutated into a ghoul, he accidentally activated the shelter system. From then on, he slowly built an invincible shelter in the apocalypse and lived a comfortable and comfortable life... [Ding! The host kills the first mutated creature and successfully activates the shelter system! [Ding! Congratulations to the host for killing a level 1 elite ghoul and obtaining a simple power blueprint! [Ding! Congratulations to the host for killing a level 2 mutated cockroach and obtaining a simple water source purification blueprint] … While others were still struggling in the apocalypse, fighting for life and death for a piece of bread, Zhou Qi was lying leisurely in the luxurious room of the shelter, enjoying wine and steak, and living like an emperor. While others were still fighting against powerful alien beasts to obtain crystal cores to strengthen and become stronger, Zhou Qi looked at the mountains of crystal cores piled up in the shelter and was worried about which ability to strengthen first? …