不到火候不揭锅

bù dào huǒ hòu bù jiē guō

don't act until the time is ripe (idiom)

不

bù

no; not so

到

dào

to reach; to arrive

火

huǒ

fire

候

hòu

to wait

不

bù

no; not so

揭

jiē

to take the lid off

锅

guō

pot; pan; wok; cauldron