万永勇

Wan Yongyong is an author of popular science and history books about whom limited public information is available; no details such as nationality, dates of birth and death, or educational background are known. Nine of his works are included in the collection, centering on popular science, historical mysteries, and biography. Representative titles include the suspense-oriented books The Complete Collection of Unsolved Mysteries of China, Unsolved Mysteries of World Archaeology, and Unsolved Mysteries of World Celebrities, as well as nature encyclopedias such as Insect Encyclopedia, Encyclopedia of Aquatic Animals, Tree Encyclopedia, and Encyclopedia of Amphibians, along with the history-of-science work 100 Inventions and Discoveries That Changed the World. His writing tends to organize knowledge in an itemized, illustrated format for general readers, balancing readability with information, and has found a readership in the popular science and history book market.