汉字 (hàn zì) literally means 'Han character'—'Han' refers to the Han dynasty and the dominant ethnic group in China, while 'zi' means 'character' or 'written symbol.' Together, they denote the logographic writing system used for Standard Chinese and other Sinitic languages. Each character represents a morpheme (a meaningful unit) and often a syllable, and characters may be pictographic, ideographic, or phono-semantic compounds.

Chinese characters are central to literacy, education, calligraphy, publishing, and digital communication in Chinese-speaking communities. Unlike alphabetic scripts,汉字 do not directly indicate pronunciation; learners must memorize both form and sound. There are over 50,000 characters historically, but only about 3,500–4,000 are needed for basic fluency. Characters appear in textbooks, signage, menus, and digital interfaces—and mastering them is essential for reading newspapers, novels, or official documents.