Nave refers to the hall "Tiger lies in nave, and everything is auspicious." Calligraphy and painting are versatile, meaning beauty. Brush writing is full of beauty, and calligraphy writing is often used for demonstration.
The couplet "Tiger lies in nave, and everything is auspicious." The moral is "hanging a tiger at home, the owner is blessed; Crouching tiger, hidden dragon, everything is auspicious. " So many people will choose to hang this calligraphy and painting in the middle hall of their home.