然糠照薪

Explanation: Burning chaff lighting. Analogy diligently. With the "natural bran from the portrait." 　　Source: "Taiping" Volume Seventh cited "Li Qi": "Next year, Dingmu worry, because Refugees blue, Sarkozy, the natural bran according to salary, to serve Yezuo day, browsing books thousands of volumes." Thesaurus:  Rankangzizhao