Leaving a gap for others means not being too closed off, so that everyone can have a channel to communicate! But there are gaps in people's hearts, and there seems to be more than one. This gap is called the shortcoming of human nature. The word "miss" is not a derogatory word here, it is just an adjective! For thousands of years, China has promoted human nature to follow one's will. This kind of randomness has shortcomings everywhere, but it is also closed everywhere! ! Quite profound! ! Another explanation is an old saying: Keep a line with others so that they can meet each other easily in the future! ! Meaning: Don’t do too much! ! Another sentence comes to mind: If you can’t do everything, you can’t say everything, if you do everything too much, your fate will inevitably end early!