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".
Homophonic puns in Mandarin Chinese
Mandarin Chinese, like many Sinitic varieties, has a significant number of homophonous syllables and words due to its limited phonetic inventory. All languages have homophones, but in Chinese they are especially abundant. The Cihai dictionary lists 149 characters representing the syllable "yì". (However, modern Chinese words average about two syllables, so the high rate of "syllable" homophony does not cause a problem for communication.) Many Chinese take great delight in using the large amount of homophones in the language to form puns, and they have become an important component of Chinese culture. In Chinese, homophones are used for a variety of purposes from rhetoric and poetry to advertisement and humor, and are also common in Chinese loans, for example phono-semantic matching of brand names, computer jargon, technological terms and toponyms.