contrary to expectation
Unexpectedly, the Chinese idiom, Pinyin is y à Li à ozh à w à I, which means unexpected. It's from Jing Hua Yuan by Li Ruzhen in Qing Dynasty.
The origin of Idioms
Chapter 35 of Jing Hua Yuan written by Li Ruzhen of Qing Dynasty: "brother Tang said just now that the king must postpone the auspicious period. He knew that he had not expected it. He made a big fight and used his troops to suppress it."
Analysis of Idioms
Antonym as expected
Idiom usage
The best things that are not considered are often unexpected and accidental. It's so sudden, in my heart.
contrary to expectation
regarded as a favour without patting trouble to oneself - shùn shuǐ rén qíng
have an affectionate concern for each other - sòng nuǎn wēi hán