Sun Tzu (/suːn ˈdzuː, suːn ˈsuː/ soon DZOO, soon SOO;[1][2] traditional Chinese: 孫子; simplified Chinese: 孙子; pinyin: Sūnzǐ) was a Chinese military general, strategist, philosopher, and writer who lived during the Eastern Zhou period of 771 to 256 BCE. Sun Tzu is traditionally credited as the author of The Art of War, an influential work of military strategy that has affected both Western and East Asian philosophy and military thinking. Sun Tzu is revered in Chinese and East Asian culture as a legendary historical and military figure. His birth name was Sun Wu (traditional Chinese: 孫武; simplified Chinese: 孙武) and he was known outside of his family by his courtesy name Chanqing (Chinese: 長卿).[citation needed] The name Sun Tzu by which he is more popularly known is an honorific which means "Master Sun".