Shùqǐ zhāo jūn qí, jiù yǒu chīliáng rén.

豎起招軍旗, 就有吃糧人。

Lit [Once the army] enlistment flag is hoisted, there will be enlistees [who will come to join in the army].

Fig Once an opportunity is made known, (surely) there will be people interested.

Note [Note: chīliáng, “be a soldier; serve in the army”; liángcǎo, “army provisions.”]

Topics chīliáng INTERESTS liángcǎo OPPORTUNITY