Hanyu Guoxue is an online Chinese-language reference platform focused on helping users look up and explore Chinese characters. Its free dictionary contains more than 94,000 characters and draws on coverage found in major works including the Xinhua Dictionary, Kangxi Dictionary, and Shuowen Jiezi. Users can search by character, pinyin, radical, stroke count, or a range of character codes, including Wubi, Cangjie, Zhengma, and Unicode.

Entries may provide pronunciation, meanings, explanations, citations, input methods, stroke order and writing animations, as well as reference information from classical dictionaries and translation resources. The site also offers organized character collections, such as lists of common and less common characters, polyphonic characters, repeated-character forms, standalone characters, and simplified-to-traditional comparisons. Additional tools support searches by four-corner code and browsing by pinyin or stroke count.

With its broad character coverage and multiple lookup methods, Hanyu Guoxue serves as a practical resource for students, language learners, and anyone seeking information about Chinese writing and vocabulary