Lin Sanqi accidentally discovered that he could travel back to 1959 through any door, so the poor Lin Sanqi wanted to start “traffic monetization” through the golden finger of traveling through two eras. Bring the traditional medicine (TCM) knowledge and medicinal materials of that year to 2023 to make a fortune, and at the same time bring the modern medicine (Western medicine) knowledge and drugs of 2023 to that year to cure diseases and save lives. Yes, this is a story about a doctor traveling between two worlds. (Not a purely medical article)