宝山空回

Explanation: Into the mountains is full of treasures, but it came out empty-handed. Metaphor based on conditions, should have had a bountiful harvest, but nothing to gain (especially knowledge). 　　Usage: Partial official; as attribute; metaphor environment is nothing good exposure 　　Source: "The concept of Mahayana Bunsen carefully goods from the world": "If people without hands, although to Baoshan, and finally no gain." 　　Examples: Tao Liu overseas two good slogan: "I do not know if the temporary differences tongue rhyme, such as Baoshan empty-handed into the back." (Qing Li Ruzhen "Flowers in the Mirror," the twenty-eighth back) Thesaurus:  Air into A golconda gyrus