- 噬脐莫及 shìqímòjí too late for regretsliterally meaning one cannot bite one's own navel, used to describe a situation where it is too late to regret one's actions; no use crying over spilt milk
- 噬脐何及 shìqíhéjí too late for regretsLiterally "how can one reach one's own navel to bite it"; used to describe a situation where one has made a mistake and it is impossible to undo the damage.
