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 name
Although there are currently over 4,000 Chinese surnames (, "xìng") in use in China, the colloquial expression for the "Chinese people" is Bǎixìng (百姓) "Hundred Surnames", and a mere hundred surnames still make up over 85% of China's 1.3 billion citizens. In fact, just the top three—Wang (王), Li (), and Zhang (張)—cover more than 20% of the population. This homogeneity results from the great majority of Han family names having only one character, while the small number of compound surnames is mostly restricted to minority groups. This has not always been true in Chinese history: between the first and fifth centuries AD, a law against multiple-character personal names briefly popularized two-character surnames and a number of important figures like Zhuge Liang and Sima Qian possessed them.