汉字, or Chinese characters, are the written symbols used in the Chinese language. They are logograms, meaning each character represents a word or a meaningful part of a word. 汉字 have a history of over 3,000 years and are an essential part of Chinese culture and communication. There are thousands of 汉字, with each character having its own pronunciation and meaning. They can be combined to form words and phrases. Learning 汉字 can be challenging due to their complexity, but they are fundamental for reading and writing in Mandarin and other Chinese dialects.