被褐怀玉

Explanation: Wearing coarse clothes and arms of jade. Although the analogy is poor background, but there is genuine talent. 　　Usage: Joint type; as the predicate attribute; that talented persons are not exposed 　　Source: Qin Li Er, "I" Chapter 70: "Knowing who I hope, I were you, the sage is brown Huaiyu." He Shang Gong Note: "those who are brown, thin outside; Huaiyu who, within thick. hide treasure pregnant, not to show people. " 　　Examples: Today, while the next was not there ~ were almost caught in the Wei-Bin? (San Guowei Cao Cao "Seeking Order") Thesaurus:  Beihehuaizhu