野人献芹

Explanation: When the celery is not worth a good thing dedicated to others. Metaphor is not much value the contribution of things (mostly give someone a present or proposals for the kind words.) 　　Source: "Lie Zi Yang Chu" has the United States Rong Shu Xiren, Gan Taiwan stems, Qin Ping child who termed the township ho, ho to take the taste of the town, sting the mouth, miserable in the abdomen. Public contempt and resentment of, the National People's Congress ashamed. "