When the "Qieyun" became the national standard in the Tang dynasty, several copyists were engaged in producing manuscripts to meet the great demand for revisions of the work. Particularly prized were copies of Wáng Rénxū's edition, made in the early 9th century, by Wú Cǎiluán (), a woman famed for her calligraphy. One of these copies was acquired by Emperor Huizong (1100–1026), himself a keen calligrapher. It remained in the palace library until 1926, when part of the library followed the deposed emperor Puyi to Tianjin and then to Changchun, capital of the puppet state of Manchukuo. After the Japanese surrender in 1945, it passed to a book dealer in Changchun, and in 1947 two scholars discovered it in a book market in Liulichang, Beijing. Studies of this almost complete copy have been published by the Chinese linguists Dong Tonghe (1948 and 1952) and Li Rong (1956).