充栋汗牛

Explanation: That the books piled high and pillars, and more to the cattle operation was sweating. Describe the rich collection of books or writings. A phrase Tangliu Zong Yuan "Mr. Lu Wentong Tomb": "its for the book, at the charge Dong Yu, oxen and horses out of the sweat." 　　Source: A phrase Tangliu Zong Yuan "Mr. Lu Wentong Tomb" its for the book, at the charge Dong Yu, out of the sweat cattle. " 　　Examples: In the last hundred years is of less than a few times, works more ~, can not win total. ★ Zhenduo "Illustrated History of Chinese Literature," the fifth of eight chapters