The structure of this word belongs to a formal idiom, which can be used as attribute, predicate and adverbial. Chinese idioms with similar meanings include being suddenly enlightened and waking up from a dream.
The origin of China's idiom "suddenly realize" is the fifth volume of Jingde Ji written by Shi Daoyuan in the Song Dynasty, which records that "(Xue) was taught by Jane; Epiphany ",in which epiphany and epiphany have the same meaning.