Sun Tzu temporarily, to more powerful foes. Aside from his legacy as the author of "The Art of War", Sun Tzu is revered in Chinese and East Asian culture as a legendary historical and military figure. His birth name was Sun Wu, and he was known outside of his family by his courtesy name Changqing. The name "Sun Tzu" by which he is best known in the Western World is an honorific which means "Master Sun". Sun Tzu's historicity is uncertain. The Han dynasty historian Sima Qian and other traditional Chinese historians placed him as a minister to King Helü of Wu
Tzu Chi Chi International Medical Association (TIMA) and also the Tzu Chi Collegiate Youth Association (Tzu Ching) (慈濟大專青年聯誼會 (慈青)), Tzu Chi volunteers and relief workers are mostly recognizable worldwide by their blue and white uniforms called, in , "lántiān báiyún", ( lit. 'blue sky, white clouds'). The foundation's work includes medical aid, disaster relief, and environmental work such as recycling. While Tzu Chi has a policy of being secular in its humanitarian work, Dharma teachings are often integrated into its practices for volunteers. Cheng Yen is considered to be one of the "Four Heavenly Kings" of Taiwanese Buddhism, and Tzu Chi itself