请勿靠近名草有主请勿靠近名花有主
[qĭng wù kào jìn míng căo yŏu zhŭ qĭng wù kào jìn míng huā yŏu zhŭ]
'Do Not Approach: Taken Grass/Tree. Do Not Approach: Claimed Flower' means 'stay away as I already belong to someone'. It's a poetic way for someone to state they are committed to a relationship.