What do you mean, others can only go in and not out?

1, that is, you can't get in or out, which means that someone only pays attention to their own needs and interests on a certain occasion or occasion, without considering the feelings and needs of others.

2. It is said that a person can only go in and out, because there is an ancient story that the brave are fearless. It is said that because the brave man broke the dogma of heaven, the jade emperor only punished the brave man by eating property, swallowing property from all directions without diarrhea and making a fortune.