The Art of War is an ancient Chinese treatise written by a man who took the pseudonym Sun Tzu. The book reveals the intricacies of diplomacy and warfare, tactical moves and strategies, the ability to behave on the battlefield, and also poses problems of choice and indicates the paths for the development of certain events. The treatise had a huge influence on the politics and economy of different states, and especially the eastern ones . Among his famous readers were General Axel Airo and Marshal Carl Gustav Mannerheim. Numerous editions and translations of this book into different languages of the world indicate that the work has not lost any of its relevance; on the contrary, more and more people of various professions are turning to it, solving completely different life problems. The publishing design has been preserved in PDF A4 format.