When will you come here? Don't hesitate when you come!

The horizon of the sky, the corner of the earth and intimate friends are all neglected by half.

Life is once in a blue moon, only parting.

This is a eulogy in Lin's novel Old Things in the South of the City, which appears repeatedly in the novel. It can be said that it is the theme song and theme of "Old Things in the South of the City", which summarizes the sad content of the work and makes the work exude a touch of sadness.