I Use the Technology Tree to Light up Another Time and Space

I want to be a salty fish, but my family insists on forcing me to engage in technology Zhou Lin traveled through time and became a son of a down-and-out family. He originally wanted to be a salted fish. Unexpectedly, family crises came one after another, forcing him to take out mathematics, physics and chemistry. Improve papermaking, create soap, and become rich by accident. Talented businessmen and women spent all their wealth for him, martial arts heroines pointed their swords at the world for him, and royal princesses secretly passed on secrets for him. Zhou Lin helplessly spread his hands: "I really just want to be a salted fish!" Until the shocking conspiracy against him surfaced...