Commentary: Dong: Dong Yu, house. Books sweat when transported and can be piled on the roof when stored. Describe a large collection of books.

From: Zong Yuan's "Lu Tomb Watch": "Although it is a book, it is full of buildings and sweating."

Example: health preservation is passed down from generation to generation, ~, who has done it effectively?

◎ Qing Pu Songling's Strange Tales from a Lonely Studio Feng Sanniang

Grammar: combination; As a predicate; It contains praise and describes a large collection of books.