What does it mean that the belt used to be wider and wider and it became home everywhere?

The belt is getting wider and wider: from Liu Yong's "Butterfly Lovers" "The belt is getting wider and wider, and I don't regret it. I am thin for Iraq. "

Describe the indomitable life in a foreign land

Home is everywhere, home is everywhere: (There seems to be something wrong with this sentence. Are there homeless people everywhere? )

It also embodies a wandering life.

Over time, after persistence and hard work, I became helpless and tired.