钻故纸堆

Explanation: Books and papers that. Blind study that ancient and divorced from reality. Also for the drilling and papers ", and study it on paper." 　　Source: "Bo Yang Miscellaneous Works meaning of Innocent the world" on these, so we have neither the time drilling stacks of paper, no ability to drill and papers pile, we just remind the reader that classic, which abruptly put off half of the Chinese culture of mourning into a disability, at least in China has existed for a thousand years. "