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.
Yuen Ren Chao
He also wrote "The Lion-Eating Poet in the Stone Den". This Chinese text consists of 92 characters, all with the sounds "shī", "shí", "shǐ" and "shì" (the diacritics indicate the four tones of Mandarin). When written out using Chinese characters the text can be understood, but it is incomprehensible when read out aloud in Standard Chinese, and therefore also incomprehensible on paper when written in romanized form. This example is often used as an argument against the romanization of Chinese. In fact, the text was an argument against the romanization of Classical Chinese and Chao was actually for the romanization of modern vernacular written Chinese; he was one of the designers of Gwoyeu Romatzyh.