2.hit can refer to a mental or emotional "blow".
3. hit at means "hit", but it is not necessarily "hit".
4.hit can refer to works that are popular for a while (such as songs, movies, plays, performances, etc.) ), can also refer to sensational people or things.
Extended data
First, verb extension
Hit basically means "hit" and "hit". It can refer to the action of "hitting" with hands, fists, weapons, etc. It can also refer to an obvious collision from slight to destructive, or it can refer to leaving an impression on thoughts and feelings. Hit emphasizes concrete or abstract collision and its purpose and strength. Extension can be "meet by chance", "discover, think", "attack, make people suffer", "attack, criticize", "guess right, expose the truth", "fit, hit it off", "demand", "reach, finish" and "start, start".
Second, the extension of nouns.
Hit as a verb means "hit, hit", and as a noun means "hit" with your hands or something. Extension can refer to "satirical attack" with vicious language.