Hanji (Han: 卡へ二吉, tr. Hanji) is the official script of Hani, along with Hanzi. It is derived from Chinese radicals that are assigned Han pronunciations, and multiple forms of Hanji was in use until its standardization in the late 18th century. Hanji is typically used together with Hanzi (otherwise known as Chinese characters), Hanzi would represent nouns, whilst Hanji would represent morphemes and other grammatical components not found in Chinese. However, Hanzi is typically written in special symbols to differentiate it from Hanji characters that have a similar appearance. Hanji is also written as ruby characters similar to furigana and its sister script Zhuyin.