The Ferocious Beasts Are Invading, I Will Devote My Life to Research and Save Mankind

Gu Liang traveled to a world full of ferocious beasts. Here, people built high walls to keep the ferocious beasts out. When Gu Liang's life was in danger, his life was linked to the fate of the country. Saving the country meant saving himself. Also gains the Apocalypse ability. When ferocious beasts invade, he invents new types of firearms. The plague plagued the world, and he invented a special medicine. Technology stagnated and he invented the steam engine. When these technologies saved the country from extinction, people discovered that the great savior turned out to be a young man who was about to die. Everyone weeps for it! Doctor: "Please take a rest, your life can't stand the torture anymore!" Senior management: "This is the pillar of the country!" Civilian: "My life was saved by him. I am willing to trade my life for him to live one more day!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.