Character amnesia
It is difficult to establish exactly how many different Chinese characters are in use today; the new HSK, a widely used proficiency test for Standard Chinese as a second language, tests over 2,600 different characters, whilst in 1988 the People's Republic of China published the "List of Commonly Used Characters in Modern Chinese" which contains 7,000 different characters. In Japan, where a smaller set of characters are in general usage, the Japanese Ministry of Education prescribes the teaching of 2,136 kanji in primary and secondary school in a list called the jōyō kanji, meaning "regular-use Chinese characters".
Chinese classifier
Chinese has a large number of nominal classifiers; estimates of the number in Mandarin range from "several dozen" or "about 50", to over 900. The range is so large because some of these estimates include all types of classifiers while others include only count-classifiers, and because the idea of what constitutes a "classifier" has changed over time. Today, regular dictionaries include 120 to 150 classifiers; the 8822-word "Syllabus of Graded Words and Characters for Chinese Proficiency" () lists 81; and a 2009 list compiled by Gao Ming and Barbara Malt includes 126. The number of classifiers that are in everyday, informal use, however, may be lower: linguist Mary Erbaugh has claimed that about two dozen "core classifiers" account for most classifier use. As a whole, though, the classifier system is so complex that specialized classifier dictionaries have been published.