History of education
Although there are more than 40,000 Chinese characters in written Chinese, many are rarely used. Studies have shown that full literacy in the Chinese language requires a knowledge of only between three and four thousand characters.
Zhongwen Da Cidian
This encyclopedic dictionary includes 49,905 Chinese characters arranged under the traditional 214 Kangxi radicals. Each character entry shows the evolution of graphic forms (such as small seal script), gives pronunciations, and chronological meanings with sources. Words, phrases, and four-character idioms are given under the head character entry, arranged according to the number of strokes in their components. "There are many phrases under some characters," note Teng and Biggerstaff (1971:133), for example, 3,417 under "yi" (一 "one") and 1,398 under "huang" (黄 "yellow").