Sun Wu, famous general, strategist and Legalist philosopher, contemporary with Confucius 孔子[Kong3 zi3] (551-479 BC), author of "The Art of War" 孫子兵法|孙子兵法[Sun1 zi3 Bing1 fa3], also known as Sun Tzu 孫子|孙子[Sun1 zi3]
Definitions (Wiktionary)
name
Sun Tzu (military general, strategist and philosopher of the Spring and Autumn period (544 BC - 496 BC)) (syn.) 孫子, 孙子