What does the ending of broken inkstone poem mean? Please analyze it briefly.

Unknown, and avoid harm. The couplet at the end of "Poems on Broken Inks" means that if you are really learned, you should also discard Lian Bi, that is, just like jade management, you should keep your true colors and remain unknown, so that you can avoid harm all over your body. Excerpt from Broken inkstone Poetry: I have fallen into the same legacy, and I have been deeply plowed into the field; Trial washing and initial drying, before burning; There is an article robbery, I would like to say something; Who can throw a pen at the same time?