前后

前后 refers to the sequence of events or the time before and after something happens. It emphasizes the chronological order or the relationship between two moments in time.

The character 前 (qián) means 'before,' and 后 (hòu) means 'after.' Together, they form a compound that represents the temporal relationship between two events, often used to describe cause and effect or changes over time.

前后 is commonly used in both formal and informal contexts, such as discussing historical events, personal experiences, or logical sequences. It can also imply a contrast between past and present, and it is frequently found in idioms and proverbs related to time and change.