Spirit Cage: I, the Master of the Dead, Reshape Civilization

(Madoo is not dead, Captain Mark meets) When Yang Lian opened his eyes, he became a mortal in the world of "Spirit Cage"! Precarious and as humble as an ant? Ding! The Necromancer System is activated! Killing the pole-devouring beast = summoning the skeleton army + unlimited upgrades + soaring source particles! Other people's weapons couldn't penetrate the skin of the Devouring Beast, and his skeleton sword was a critical hit! The survival of others is to linger, but his killing is the restart of civilization! "Only I can kill the Absolute Devouring Beast! I am the only 'anchor' of Gang Mana's ecology!" Bai Yuekui (staring at the ferocious army of lickers behind him): "I know you can ignore the spiritual breath seeds and kill the pole-devouring beast... But what's wrong with your 'creepers' and 'tyrants'? They are more like monsters than the pole-devouring beast!" Yang Lian: "Resurrection of one person? The situation is too small! What I want is to take back every inch of land! Rebuild the fire of human civilization! We... Are duty-bound!" Integrate lighthouse resources and build a steel fortress! Necron technology merges with apocalyptic survival skills, skeleton workers work day and night, and ground strongholds rise from the ground! From living an ignoble existence to working step by step, from a small land to a prairie fire - he is taking back the living space that belongs to mankind inch by inch from the bloody mouth of Mana Ecology! However, when Yang Lian finally came into contact with the ultimate secret behind the Flower of Mana... This doomsday was far colder and more desperate than anyone imagined! To become the new savior? Or... Release a natural disaster of the undead that is more terrifying than the Devouring Beast? [The introduction is too weak, please move to the text]