jiàn​tù​gù​quǎn

to act at the right time

见兔顾犬 見兔顧犬 jiàn​tù​gù​quǎn
to act at the right time
To act or take measures as soon as the opportunity or situation arises; to cope with a sudden situation; it suggests that taking action late is better than not at all, often paired with the idiom 亡羊补牢 wáng​yáng​bǔ​láo

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