Wang Shi, a senior auto mechanic in the 21st century, travels to the story of repairing cars in 1979 and building cars. This is a novel with a very high degree of automotive knowledge, from engine construction to fault diagnosis, logical reasoning and elimination, most of which are real cases that Toutiao Di encountered in his previous work. If you want to know more about automotive knowledge, please read this book, which will make you gain a lot.