Introduction to the Sword Grinding Room: On the east side of the Hall is the famous "Sword Grinding Room" study room, where Liu Yazi wrote nearly two million words of articles and poems. His collections of poems, lyrics and essays are also in this room. To name it. The desks, bookcases, bookshelves and other items used by Liu Yazi back then are displayed in the room. On the wall hangs a couplet presented to Liu Yazi by Fu Dugenshu, a member of the Nanshe Society.