故纸堆

Explanation: Refers to the large number of old books, information. Containing derogatory. Analogy of people obsessed with reading old books, I do not know ways of the world 　　Source: "Five dollars DIE God like Master lantern": "Rise of drilling and papers, when to speak out when? And papers in the pile, there are endless treasure of knowledge to explore." 　　Examples: So the rest of the Greek and foreign stories as well as the poor are, in sporadically from foreign ~ picked up.