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Open the tool →雷大雨小 (léi dà yǔ xiǎo) is a Chinese idiom (chengyu) meaning “Much talk, little action”.
雷大雨小 is pronounced léi dà yǔ xiǎo in Mandarin Chinese.
Literally, 雷大雨小 means “Loud thunder, small rain”. It is used to mean “Much talk, little action”.
比喻说得多,做得少,声势很大,实效很小