Introduction to the library: The fifth entrance is the library, which is also a place for receiving guests. In the living room downstairs, the calligraphy and painting long tea table and chairs are arranged in an orderly manner. The central hall is decorated with ancient paintings, and the couplets are written by Liu Yazi himself. There is a special building "complex wall" on the west wall of the upper floor. It was here that Liu Yazi took refuge to avoid the murderous hands of the past. The five houses east of the compound wall are Liu Yazi's library.