out of the blue
Unexpectedly, the Chinese idiom, Pinyin is ch ū h ū y ì w à I, which means to be used in the unexpected. From the story of heroes and heroines.
The origin of Idioms
The 25th chapter of biography of heroes and heroines by Wen Kang of Qing Dynasty: "I don't want the girl to make a fuss, but I'm so surprised that I can't catch the slip of the tongue."
Idiom usage
It can be used as a predicate, attributive or adverbial "Accident". A few days later, I met them. It was a surprise to them. Guo Moruo's Hong Bo Qu (Chapter 1, 3)
Analysis of Idioms
[synonym]: unexpected, unexpected [antonym]: be prepared in case of emergency
Chinese PinYin : chū hū yì wài
out of the blue
yield twice the result with half the effort. shì bàn gōng bèi