Yào zhī hé shēnqiǎn, xū wèn guò hé rén.

要知河深淺, 須問過河人。

Lit [If you] want to know the depth of the river, best ask someone who has crossed through it.

Fig He knows the water best who has waded through it. Seek the advice of experienced people.

Note [See also bù zhī shuǐ shēnqiǎn above and yào zhī shān xià lù below.]

Topics ADVICE EXPERIENCE