周易 Traditional form: 周易 Pinyin (reading): Zhōuyì Definitions: another name for Book of Changes (I Ching) 易經/易经 ( Yìjīng) Characters: 周 - Zhou dynasty; circumference 易 - to change; to exchange, to trade; simple, easy Traditional characters: 周 - Zhou dynasty; circumference 易 - to change; to exchange, to trade; simple, easy