极深研幾

Explanation: Research: Research, review; few: fine. Study described a profound and detailed. 　　Source: "Book of copulative on the" husband is easy, the sage is also the reason why a few deep and Research. CD deep also, it can pass the blog world, only a few have, and it could become the world of business. " 　　Examples: As the article to and more than a thousand articles, are ~, meaning to do this who do. (Ming Qu "JianDengXinHua Xiuwen Scheeren Biography")