This is the 4355th most frequent Chinese word.
後即
"後即" means "after then" or "following immediately after."
In this sentence, '后即' indicates an immediate action following the completion of another action.
完成作业后即可以休息。
You can rest immediately after completing the homework.
Here, '后即' defines an instruction or expected behavior that should occur directly after another event.
会议结束后即离开会场。
Leave the venue immediately after the meeting ends.
In this usage, '后即' conveys the prompt beginning of an action after an event is completed.