It's a proverb that only thunder and no rain. Metaphor is all talk and no action.

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Metaphor is all talk and no action. I only heard a lot of words and didn't see any action.

source

Kang Zhaoshi and Zeng Kui's "University Spring and Autumn" VI: "Fu Yifu was silent for a while and turned to a topic and asked:' Bantou, when did you start to move? How come it only thunders and doesn't rain "

Extended data

synonym

Dry thunder and no rain;

Refers to imposing manner without actual action.

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Dry: empty. Metaphor empty promises, refused to implement, refused to give benefits. ? Spoken language also means that people cry loudly, but don't shed tears. Only momentum, no actual action.

source

Lao She divorced: "It's useless to thunder without rain."

Baidu Encyclopedia-Only thunder and no rain

Baidu Encyclopedia-It thunders but it doesn't rain