Context: Hokkien dialects are typically written using Chinese characters (漢字, Hàn-jī). However, the written script was and remains adapted to the literary form, which is based on classical Chinese, not the vernacular and spoken form. Furthermore, the character inventory used for Mandarin (standard written Chinese) does not correspond to Hokkien words, and there are a large number of informal characters (替字, thè-jī or thòe-jī; 'substitute characters') which are unique to Hokkien (as is the case with Cantonese). For instance, about 20 to 25% of Taiwanese morphemes lack an appropriate or standard Chinese character.

Question: Hokkien is usually written using what characters?
Answer: Chinese

Question: Written Hokkein is based on what?
Answer: classical Chinese

Question: What is another name for standard written chinese?
Answer: Mandarin

Question: Approximately what percentage of Chinese morphemes lack a standard chinese character?
Answer: 20 to 25%

Question: What percentage of written Chinese lacks a standard Chinese character?
Answer: Unanswerable

Question: How is Cantonese usually written?
Answer: Unanswerable

Question: What is used for Mandarin but doesn't correspond to Taiwanese words?
Answer: Unanswerable

Question: What is written Cantonese based on?
Answer: Unanswerable

Question: What is adapted to the spoken form of Chinese?
Answer: Unanswerable