1. When Ruanke asked for a cigarette, Haier Mao handed the cigar box. Ruanke took a cigarette and cut it off. Nora lit a match for him, and Nora was holding a match. Ruanke lit a cigarette, which can be summarized as the first function of stage description: explaining the plot, describing the actions of the characters and showing the details of the plot.

2. When Haier Mao was reading the letter, Nora stared blindly and grabbed Haier Mao's dance clothes and put them on herself. She talks to herself intermittently, hoarse and in a low voice, covering her head with a shawl and waiting for description, which reveals Nora's contradictory, tangled and painful psychology before the truth of the loan is exposed, from which we can sum up the second function of stage explanation: to describe the actions and behaviors of the characters and reveal their psychology.

Haier Mao took the letter, took it out of the mailbox, called the kitchen to go back to the house with the letter, closed the door and turned over the whole stack of letters. The description of the three stages all emphasizes that the letter is the center everywhere, from which the third function of the stage description can be summarized: tracking and focusing on Daoxian County, rendering benign stimuli and promoting plot development.