Written Chinese
Because the majority of modern Chinese words contain more than one character, there are at least two measuring sticks for Chinese literacy: the number of characters known, and the number of words known. John DeFrancis, in the introduction to his "Advanced Chinese Reader", estimates that a typical Chinese college graduate recognizes 4,000 to 5,000 characters, and 40,000 to 60,000 words. Jerry Norman, in "Chinese", places the number of characters somewhat lower, at 3,000 to 4,000. These counts are complicated by the tangled development of Chinese characters. In many cases, a single character came to be written in multiple ways. This development was restrained to an extent by the standardization of the seal script during the Qin dynasty, but soon started again. Although the "Shuowen Jiezi" lists 10,516 characters—9,353 of them unique (some of which may already have been out of use by the time it was compiled) plus 1,163 graphic variants—the "Jiyun" of the Northern Song Dynasty, compiled less than a thousand years later in 1039, contains 53,525 characters, most of them graphic variants.
Education in China
A second language reform required the simplification of ideographs because ideographs with fewer strokes are easier to learn. In 1964 the Committee for Reforming the Chinese Written Language released an official list of 2,238 simplified characters most basic to the language. Simplification made literacy easier, although some people (especially in Hong Kong which is still using traditional Chinese) taught only in simplified characters were cut off from the wealth of Chinese literature written in traditional characters. Any idea of replacing ideographic script with romanized script was soon abandoned, however by government and education leaders.