顺水推舟

shùn shuǐ tuī zhōu

to go along with how things are moving

Character by character

顺shùn
with

水shuǐ
current

推tuī
push

舟zhōu
boat

他见大家都同意，就顺水推舟答应了。

Seeing everyone agree, he went along and said yes.

Tone: neutral.

Using momentum that is already there, often to your own advantage.

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