Once the calligraphy is done on the Xuan paper, it usually contains wrinkles and creases distributed randomly throughout the paper (Fig.1, below). Therefore, before formal presentation, the paper needs to be straightened out to eliminate all wrinkles, and this process is known as mounting or wet mounting (裱).
The first step in wet mounting involves wetting the calligraphic work and gluing a piece of Xuan paper at the back of the work with a specialized glue. The edges at the back of the work is then glued to a wall when the work is still wet, and subsequently let dry. After at least one day, the entire piece will be left with no wrinkles as shown below on the right (Fig. 2):