探骊得珠

Explanation: Li: Old means black dragon. Li made the dragon's chin in the Pearl. Was originally referred to Italy to take big risks. Analogy often profound meaning after the article, concise language to get essentials. 　　Usage: -Linked; for the predicate; metaphor of an issue to fasten the theme 　　Source: Qing Chen Yuan, "Yong Jiang Zhensheng calligraphy free notes on a narrow": "as Bringing Out the Best, Cox's worthies have discussions, are rap carry on." Thesaurus:  tanli, tanlizhu, tanzhu