不磷不缁

Explanation: Do not wear thin, not dyed black. The quality of constancy noble metaphor, not because of outside influence and change. 　　Source: Phrase from the "Analects, XVII": "Kennedy did not say almost, grinding without phosphorus. Do not say the white peace, uncontaminated." Guidelines Kong Anguo Annals He Yan said: "Words and Kennedy were not wear thin, to White persons not black dye of the Line. gentleman, although chaos in the cloud, cloud contamination is not chaos. " 　　Examples: Zhao offend the public, people often fear hiding under the door to change things, independent public ~, as in the time Chao. ★ Song Ye Shi, "Tixing inspection details Princes epitaph"