Yang Xi
Although no autograph copies of Yang Xi's famous calligraphy have survived, one well-documented stone rubbing version of the revealed "Huangting jing" (黃庭經, Yellow Court Scripture) has been given special attention. The Song dynasty connoisseur and critic Mi Fu (1051-1107) analyzed four manuscripts of the "Huangting jing", and said the best one was written on a silk scroll with a provenance that he traced back to the early 8th century. Mi disagreed with a former owner Tao Gu (陶穀, 903-970) who said that Wang Xizhi wrote the manuscript, and concluded it was a superb example of calligraphy from the Six Dynasties period. The Ming dynasty calligrapher and painter Dong Qichang (1555-1636) was so impressed by the Mi Fu manuscript that he made a copy, recommend it as the best model for studying "kaishu" script, and included it as the first example in his classic "Xihong tang fatie" (戲鴻堂法帖, Calligraphy Compendium of the Hall of the Playful Goose). Dong's colophon attributed the calligraphy to Yang Xi himself and described it as "the traces of a holy immortal" (Ledderose 1984: 262-263, who calls Dong's attribution to Yang "extremely optimistic").
Manuscript
The study of the writing, or "hand" in surviving manuscripts is termed palaeography. In the Western world, from the classical period through the early centuries of the Christian era, manuscripts were written without spaces between the words (scriptio continua), which makes them especially hard for the untrained to read. Extant copies of these early manuscripts written in Greek or Latin and usually dating from the 4th century to the 8th century, are classified according to their use of either all upper case or all lower case letters. Hebrew manuscripts, such as the Dead Sea scrolls make no such differentiation. Manuscripts using all upper case letters are called majuscule, those using all lower case are called minuscule. Usually, the majuscule scripts such as uncial are written with much more care. The scribe lifted his pen between each stroke, producing an unmistakable effect of regularity and formality. On the other hand, while minuscule scripts can be written with pen-lift, they may also be cursive, that is, use little or no pen-lift.