The content is drawn from the opera story. In ancient time, a scholar got the top ranking in the imperial examination, being liked by the Prime minister so much and chosen as his son-in-law at his own will. The scholar refused the prime minister politely but he struggled to bother the scholar and persuade him to accept the request. Therefore the scholar felt annoyed deeply while missed his wife so much. Thus he wrote the letter for his wife and expressed his faithful love for her with the help of pigeons to deliver the letter.