易経記号（六十四卦）

Yijing Hexagram Symbols is a Unicode block containing the 64 hexagrams from the I Ching.

The I Ching (/ˈiːˈtɕiŋ/; Chinese: 易經; pinyin: Yìjīng), also known as the Classic of Changes or Book of Changes in English, is an ancient divination text and the oldest of the Chinese classics.

The I Ching was originally a divination manual in the Western Zhou period, but over the course of the Warring States period it was transformed into a cosmological text with a series of philosophical commentaries known as the 「Ten Wings.」 After becoming part of the Five Classics in the 2nd century BC, the I Ching was the subject of scholarly commentary and the basis for divination practice for centuries across the Far East, and eventually took on an influential role in Western understanding of Eastern thought.

The I Ching uses a type of divination called cleromancy, which produces random numbers. Four numbers between 6 and 9 are turned into a hexagram, which can then be looked up in the I Ching book, arranged in an order known as the King Wen sequence. The interpretation of the readings is a matter of long-lasting debate, and many commentators have used the book symbolically, often to provide guidance for moral decision making as informed by Confucianism. The hexagrams themselves have often acquired cosmological significance and paralleled with many other traditional names for the processes of change such as Yin and Yang and Wu Xing.

The I Ching is an influential text that is read throughout the world. Several sovereign states have employed I Ching hexagrams in their flags, and the text has provided inspiration to the worlds of religion, psychoanalysis, business, literature, and art.