Sentence: Come and go freely like a foreigner.
Couplet: It is inconvenient to enter and exit the prison people.
It is a state of freedom and unfettered, like a traveler outside the world, walking between heaven and earth as he pleases. However, this kind of freedom is not available to everyone, because there are always many fetters and constraints in the world that make it impossible for people to really come and go freely.
Comparatively speaking, people in prison who are inconvenient to enter and exit are in a state of restriction and restraint. These people may be imprisoned and deprived of their freedom for various reasons. They can't come and go at will, can't move as they please, and live in a closed and confined environment. The contrast between these two states is stark. The freedom of outsiders and the inconvenience of people in prison make people think about the meaning and value of freedom. Freedom is not unfettered, but the ability to choose and act autonomously under certain rules and restrictions. Those who lose their freedom are in a state of coercion and bondage, losing the ability to choose and act independently. We can have a deeper understanding of the value and meaning of freedom, and we should cherish freedom and respect the rules. 