Birds of prey will strike, fly low and gather their wings
Bird of prey will attack, fly low and gather wings is a Chinese idiom, which means to mean to play hard to get and wait for an opportunity.
source
"Six Taos · FA Qi" says: "birds of prey will attack, fly low and gather wings; beasts will fight, and fall with their ears."
Examples
Good brother, and don't let your nature be angry. Wumingshi's the story of Ming Feng
Birds of prey will strike, fly low and gather their wings
out at heels and elbows -- tattered dress - zhǒng jué zhǒu jiàn
deduce simplicity into complexity - yǐ jiǎn yù fán