冇咁大個頭就唔好戴咁大顶帽
mou-5 gam-3 daai-6 go-3 tau-4 zau-6 m-4 hou-2 daai-3 gam-3
daai-6 deng-2 mou-2
If one has not such a big head, one should not put on such a big
hat. (literal)
Do not throw straws against the wind.
One should not swim beyond one's depth.
Cut one's coat according to one's cloth.
Spend no more than one can afford.
Undertake what one can do.
注：比喻做事应量力而为。