This book pursues the historical logic of Jiangnan regional culture, focusing on "How big is Jiangnan", "How long is the history of Jiangnan", "When did Jiangnan grow up", "What are the personalities of Jiangnan people", "How do Jiangnan people live and think", "The personality and characteristics of Jiangnan culture", "What good things are there in Jiangnan" "What are the profound things in Jiangnan?" "The relationship between Jiangnan and an artificial river" "The urban story of Jiangnan" "The past and present life of Jiangnan and the Yangtze River Delta" "How to study Jiangnan today" are developed into twelve themes, explaining the connotation and changes of Jiangnan culture with a more agile thinking and more concise words. This book is suitable for readers who are interested in traditional Chinese culture, especially Jiangnan culture.