Explanation: Effect on the terms of the original drug. Refers to the internal stability after more than to exclude foreign aggression. Usage: Joint type; as the predicate attribute; metaphor from the start of things to solve the problem within Source: Han Zhongjing "Treatise on the Diseases of the Sun": "Licorice Gan Ping, there is the external problems of energy security." Examples: ~ Great classics, the far Fuguojiangbing slightly. (Sun Yat-sen "Li on the book")