不识庐山真面目

Explanation: Lushan Mountain: mountains, south of Jiujiang City, Jiangxi Province mountain. Recognize the truth of metaphor and the nature of things clear 　　Usage: Complex sentence; for predicate clause; described did not know the nature of things 　　Source: Song Su "title Xilin Wall" Poems: "cross as many different angles, near and far different level. Do not know the true colors, only from within the mountain." 　　Examples: Revolutionaries, will eventually be in the storms, the identification of direction, to distinguish between Branch Road; how to - roll to see the wood for the Yangtze River, ~! ★ Guo Xiaochuan, "thousands of miles across the Yangtze River," poem