There are several hundred languages in the People's Republic of China. The predominant language is Standard Chinese, which is based on the Beijing dialect, but there are hundreds of related Chinese languages, collectively known as Hanyu, that are spoken by 92% of the population. The Chinese languages are typically divided into seven major language groups, and their study is a distinct academic discipline. They differ as much from each other morphologically and phonetically as do English, German and Danish, but speakers of different Chinese languages are taught to write in Mandarin at school and often do to communicate with speakers of other Chinese languages. This does not mean non-Mandarin Sinitic languages do not have vernacular written forms however. There are in addition approximately 300 minority languages spoken by the remaining 8% of the population of China. The ones with greatest state support are Mongolian, Tibetan, Uyghur and Zhuang, as shown in the banknote of Chinese renminbi.