瓜田不纳履，李下不整冠

guā tián bù nà lǚ , lǐ xià bù zhěng guānguatianbunalu,lixiabuzhengguan

1. lit. don't tie your shoelaces in a melon patch, and don't adjust your hat under a plum tree (idiom)
2. fig. don't do anything that might arouse suspicion
3. innocent acts may be misconstrued

Study it in Yanamino