Zhuangzi's foreign articles. Zhuangzi is one of Taoist classics, among which Sheng Da, Heaven and Zhile are all selected from Zhuangzi Waipian. Sheng Da mainly discussed how to achieve life and destiny, and expounded the principles of health preservation. Heaven advocates the central idea of "inaction" and emphasizes that it is irresistible and unchangeable to conform to the laws of nature, while Zhile discusses in detail whether there is the greatest happiness in the world.