lit. give a plum in exchange for a peach / to return a favor (idiom)
槜李
zuì lǐ
plum with bright red skin
踏雪寻梅
tà xuě xún méi
to walk in the snow to view the flowering plum
瓜田不纳履,李下不整冠
guā tián bù nà lu:3 , lǐ xià bù zhěng guān
lit. don't tie your shoelaces in a melon patch, and don't adjust your hat under a plum tree (idiom) / fig. don't do anything that might arouse suspicion / innocent acts may be misconstrued