National Survival My Sanctuary for the Undead Is Infinitely Upgraded

(No heroine, no Madonna, pure cool writing) (Lone wolf player + undead army = alien push) Traveling through another world, the beginning is broken. The system said: There will be a black rain disaster in three days. If you don't upgrade, you will die. Yun Chuan glanced at his golden finger - [Undead Dominance System]. Others upgrade to level 1: Barely able to protect themselves from the wind and rain. He levels up 1: Skeleton Warrior reports. Others have upgraded to level 2: They are still worried about the wall collapsing. He upgrades to level 2: Unlimited summons are unlocked, and the undead army begins to take shape. Someone else summons an Iron Thorn Beast: I want the beast's bones, I'm afraid of backlash, and I'm waiting for it to cool down. His skeleton: unlimited summons, casual beating, repair after death, absolute loyalty! What's even more outrageous is that - all attacks directed at him are automatically transferred to the skeleton! He himself can't even hurt a hair. When survivors in the entire area were still picking up corpses for a single animal bone Yun Chuan has already led the army of the undead, preparing to overwhelm this alien world.