I Asked You to Save the Nation and Make a Nuclear Bomb with Your Hands?

College student Chen Fan accidentally traveled to Guangzhou in 1840, where British artillery fire was about to tear the country apart! In critical moments, [National Games Sign-in System] is activated! "Ding! Big gift package for newbies: Reward [Immortal Body], the host's physical body is 22 years old, immune to all diseases, and has unlimited energy!" "The ultimate mission: witness Japan's surrender in 1945 before returning to modern times!" In order to return home, Chen Fan was forced to become an "immortal" in the course of a hundred years of history. Sign in at Humen Fort and be rewarded with [a full set of Krupp cannon production lines]! Sign in at the ruins of the Old Summer Palace and be rewarded with [National Treasure Cave Space]! Sign in during the Sino-Japanese War of 1898 and be rewarded with [Aircraft Carrier Design Drawings]! Beauties grow old one by one, and times change again and again. Only Chen Fan will always be that 22-year-old young man, using his eternal life to create an immortal defense line that spans a hundred years!