During the Qi refining period, Lu Li, a handyman, traveled through the world of immortality and accidentally bound a fish-shaped jade pendant to establish contact with the Blue Star country. With the dual support of national science and technology and immortal cultivation techniques, he made breakthroughs in a low-key manner and refined weapons in a high-key manner, step by step in the cruel sect struggle. Faced with the man-eating demon sect and the powerful demon clan behind the scenes, Lu Li relied on modern wisdom and the country's most valuable weapons to embark on a path to become an immortal by scientifically cultivating immortality and nurturing his homeland.