Yang You is a Chinese author known for writing on the subject of ships, though public information about him is currently quite limited. His works available here are The History of Steamships and The History of Sailing Ships, both of which deal with the history of waterborne transport and fall under the category of culture. Judging from the titles and classification, the author focuses on the evolution of ship forms, propulsion, and shipping methods, tending to trace the development from sailing ships to steamships along a historical thread and to present technological change against the background of culture and social life. This approach suits general readers interested in the history of ships and can also serve as introductory reading in related fields. Because details such as his birth date, education, and professional career remain unclear, little more can be said about his life; readers may learn about his writing orientation mainly from the themes and narrative style of these works.