毕昇
Bi Sheng also developed wooden movable type, but it was abandoned in favor of ceramic types due to the presence of wood grains and the unevenness of the wooden type after being soaked in ink. However wooden movable type had evidently reached the Tangut Western Xia to the west by the 12th century. There, the Tanguts printed the Auspicious Tantra of All-Reaching Union, a 449-page text considered to be the earliest extant example of a text printed using the wooden movable type.