The Whole Country Is Soaring, Leaving Me Alone to Farm in America

China completed its technological leap and the whole country rushed to the sea of ​​​​stars. Only Li Yushan was forgotten in a small town in the south of America. The former lighthouse has hit rock bottom, supply chains are broken, technology has become obsolete, and the economy has come to a standstill. Li Yushan's way home is cut off, but the golden finger left to him by his motherland is still there. No power? Send it yourself. No food? Grow your own. Myrrh? Boil it yourself. No room? Build it yourself! Now that the old order has collapsed, in this rusty world—— During the day, you farm and develop science and technology; in the dark, you draw your sword and slay the demons!