Hanging scroll

A hanging scroll is one of the many traditional ways to display and exhibit East Asian painting and calligraphy. The hanging scroll was displayed in a room for appreciation; it is to be distinguished from the handscroll, which was narrower and designed to be viewed flat on a table in sections and then stored away again.
Hanging scrolls are generally intended to be displayed for short periods of time and are then rolled up to be tied and secured for storage. The hanging scrolls are rotated according to season or occasion, and such works are never intended to be on permanent display. The painting surface of the paper or silk can be mounted with decorative brocade silk borders. In the composition of a hanging scroll, the foreground is usually at the bottom of the scroll while the middle and far distances are at the middle and top respectively.
The traditional craft involved in creating a hanging scroll is considered an art in itself. Mountings for Chinese paintings can be divided into a few types, such as handscrolls, hanging scrolls, album leaves, and screens amongst others. In the hanging scroll the actual painting is mounted on paper, and provided at the top with a stave, to which is attached a hanging cord, and at the bottom with a roller.
History.
Scrolls originated in their earliest form from literature and other texts written on bamboo strips and silk banners across ancient China. The earliest hanging scrolls are related to and developed from silk banners in early Chinese history. These banners were long and hung vertically on walls. Such silk banners and hanging scroll paintings were found at Mawangdui dating back to the Han dynasty (206 BCE – 220 CE). By the time of the Tang dynasty (618–907), the aesthetic and structural objectives for hanging scrolls were summarized, which are still followed to this day. During the early Song dynasty (960–1279), the scrolls became well suited to the art styles of the artists, consequently hanging scrolls were made in many different sizes and proportions.
Originally introduced to Japan from China as a means of spreading Buddhism, it has found a place in Japanese culture and art and plays an important role in interior decoration.
Description.
The hanging scroll provides an artist with a vertical format to display his art on a wall. It is one of the most common types of scrolls for Chinese painting and calligraphy. Horizontal hanging scrolls are also very frequently used and a common form. The hanging scroll is different from the handscroll in that the latter is not hung. The handscroll is a long narrow scroll for displaying a series of scenes in Chinese painting. This scroll is intended to be viewed section for section during the unrolling and flat on a table, which is in contrast to a hanging scroll that is appreciated in its entirety while guiding the eyes through the artwork.
Mounting styles.
There are several hanging scroll styles for mounting, such as:
Arrangements and formats.
Besides the previous styles of hanging scroll mountings, there are a few additional ways to format the hanging scroll.
Features and materials.
Chinese mounting and conservation techniques are considered a traditional craft and are believed to have developed around 2,000 years ago. This craft is considered an art onto itself. Careful attention was and still is paid to ensure the quality and variety of the silk and paper to protect and properly fit the artwork onto the mounting, as it gives form to the art. The art is fixed onto a four-sided inlay, made from paper or silk, thus providing a border.
The artwork in the middle of the scroll is called "huaxin" (畫心; literally "painted heart"). There is sometimes a section above the artwork called a "shitang" (詩塘; literally "poetic pool"), which is usually reserved for inscriptions onto the work of art, ranging from a short verse to poems and other inscriptions. These inscriptions are often done by people other than the artist. Although inscriptions can also be placed onto the material of the artwork itself. The upper part of the scroll is called "tiantou" (天頭; symbolizing "Heaven") and the lower part is called "ditou" (地頭; symbolizing "Earth").
At the top of the scroll is a thin wooden bar, called "tiangan" (天杆), on which a cord is attached for hanging the scroll. Two decorative strips, called "jingyan" (惊燕; literally "frighten swallows"), are sometimes attached to the top of the scroll. At the bottom of the scroll is a wooden cylindrical bar, called "digan" (地杆), attached to give the scroll the necessary weight to hang properly onto a wall, but it also serves to roll up a scroll for storage when the artwork is not in display. 
The two knobs at the far ends of the lower wooden bar are called "zhoutou" (軸頭) and help to ease the rolling of the scroll. These could be ornamented with a variety of materials, such as jade, ivory, or horn.
Method and processes.
Traditional scroll mounters go through a lengthy process of backing the mounting silks with paper using paste before creating the borders for the scroll. Afterwards, the whole scroll is backed before the roller and fittings are attached. The whole process can take two weeks to nine months depending on how long the scroll is left on the wall to dry and stretch before finishing by polishing the back with Chinese wax and fitting the rod and roller at either end. This process is generally called 'wet mounting' due to the use of wet paste in the process.
In the late 20th century a new method was created called 'dry mounting' which involves the use of heat activated silicone sheets in lieu of paste which reduced the amount of time from a few weeks to just a few hours. This new method is generally used for mass-produced artwork rather than serious art or conservation as mounting done this way tends not to be as robust as wet mounting whose scrolls can last for over a century before it requires remounting.