如 ㄖㄨ ˊ rú 蛆 ㄑㄩ qū 附 ㄈㄨ ˋ fù 骨 ㄍㄨ ˇ gǔ lit. like maggots feeding on a corpse (idiom) fig. fixed on sth to cling on without letting go to pester obstinately