守经达权

Explanation: By: the right way, in principle; right: expedient, and flexible. Adhere to the principles described can be flexible, not stubborn. 　　Source: "Han Gong Yu Biography" by far the ancient keep, not Adam the world. "" Song Shi Hongmai Biography "is not something that the student can reach the right Pro." 　　Examples: Girl, do not take offense, and our implementation is a time migration, and can not keep up right after. (Qing, Culture and Sport "Heroic Biography")