如蛆附骨

1. • lit. like maggots feeding on a corpse (idiom)
2. • fig. fixed on sth
3. • to cling on without letting go
4. • to pester obstinately

Character by character

• 如(rú)as
• 蛆(qū)maggot
• 附(fù)add
• 骨(gǔ)bone