What is A Thousand Miles Away about?

It's about a young man who works as a porter in a cabaret troupe who falls in love with a songstress, and then they fall in love, but one of the songstress's performances gets her a chance to go to a foreign troupe on her own, and the girl is very reluctant to let go of him, but the boy feels that it's a chance, so he puts the girl on the boat himself.

Three years later, the girl returned to the original troupe, and the boy saw her again, feeling his own humble position, unwilling to see the girl see him again,

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