Quci Ba is an online Chinese language reference site focused on helping users look up words, idioms, and individual characters. It reports a collection of more than 40,000 Chinese idioms, 600,000 vocabulary entries, and 20,000 Chinese characters. Search results provide pinyin, pronunciation information, definitions, synonyms, and antonyms, supporting users who want to understand a term or explore related expressions.

The site brings together several reference tools, including a Chinese character dictionary, a Chinese word dictionary, an idiom dictionary, and a word-formation resource. Users can find characters by radical, pinyin, or stroke count, and browse idioms by structure, number of characters, or evaluative category, such as complimentary, neutral, or derogatory. Quci Ba also highlights popular idioms and words, recently added entries, and recommended synonym and antonym lists. Its examples and explanations are organized as a practical reference for Chinese vocabulary lookup. The site notes that its collected content has been compiled and edited by contributors, with copyright belonging to the original authors.