聽見風就是雨

Originally from Jin Ping Mei:

你這贼囚根子，得不個風兒就雨兒。 [Classical Chinese, trad.]

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你这贼囚根子，得不个风儿就雨儿。 [Classical Chinese, simp.]

Nǐ zhè zéiqiúgēnzǐ, dé bù ge fēng ér jiù yǔ ér. [Pinyin]

You are a thief, and you are agreeing uncritically with whatever people say.

From Guanchangxianxingji:

他們做都老爺的，聽見風就是雨，皇上原許他風聞奏事，說錯了又沒有不是的。 [Classical Chinese, trad.]

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他们做都老爷的，听见风就是雨，皇上原许他风闻奏事，说错了又没有不是的。 [Classical Chinese, simp.]

Tāmen zuò dōu lǎoyé de, tīngjiànfēngjiùshìyǔ, huángshàng yuán xǔ tā fēngwénzòushì, shuō cuò le yòu méiyǒu bùshì de. [Pinyin]

(please add an English translation of this usage example)

聽見風就是雨

1. to agree uncritically with whatever people say
2. to parrot other people's words, to chime in with others