What does this idiom mean?

Pinyin: Qing tiān p and l √.

Explanation: thunderbolt: thunder. It thundered on a sunny day. A metaphor for an unexpected and shocking event that suddenly happened.

Source: Song Poetry "Chickens don't crow for four nights": "Let Weng fall ill and suddenly get drunk. Just like for a long time, the sky is flying. "

For example, the sudden news of this letter was a bolt from the blue, and everyone was shocked. ★ The seventeenth time of Zeng Qingpu's "Evil Sea Flower".

Pinyin code: qtpl

Synonym: misfortune fell from the sky and came as a bolt from the blue.

Antonym: ordinary

Lantern riddle: the most abnormal weather

Usage: as subject, object and attribute; The commanders were shocked.

English: a bolt from the blue