The crane in the pine room was originally lonely, but did Chang 'e have a husband in the moon; The master wants to have an affair with the warbler, waiting to see the spring scenery fill the imperial capital.
The first two sentences say that courtship is difficult, like a lonely crane and Chang 'e in the moon, and it is naturally lonely. However, things will change for the better, and there will still be a chance when "Spring is full of emperors", that is, when spring comes.