Song Dynasty Survival Manual

Wu Fan, the head of the creative department of an advertising company, accidentally entered the temporary "Dimension Shuttle Project" during an outdoor time travel and was sent to the early Southern Song Dynasty. He does not have peerless martial arts, nor is he extremely intelligent, nor can he have infinite memory. He is just an ordinary person, an ordinary person from nine hundred years later, just like you and me. Without a golden finger, no money, no connections, not even the language, nor the writing ability, how can we truly survive in the real ancient times nine hundred years ago?