蚍 ㄆㄧ ˊ pí 蜉 ㄈㄨ ˊ fú 撼 ㄏㄢ ˋ hàn 树 ㄕㄨ ˋ shù 蚍 ㄆㄧ ˊ pí 蜉 ㄈㄨ ˊ fú 撼 ㄏㄢ ˋ hàn 樹 ㄕㄨ ˋ shù lit. an ant trying to shake a tree to overrate oneself (idiom)