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".
Written Hokkien
Writing Hokkien using Chinese characters is a common method of writing in Taiwanese literature. However, there are various problems relating to the use of Chinese characters to write vernacular Hokkien, and in many cases Chinese characters are used alongside other scripts, such as bopomofo or POJ. The problem with using only Chinese characters to write Min Nan is that there are many morphemes (estimated to be around 15 percent of running text) which are not definitively associated with a particular character. Various strategies have been developed to deal with the issue, including researching and reviving the etymologically correct Chinese character from ancient Chinese texts, and classical Chinese, creating new characters, allocating Chinese characters used in written Mandarin with similar meanings, but dissimilar etymology, to represent the missing characters, or using romanization for the "missing 15%".