What is the reason why the old man named his son Zaoer in the play? The same reason that people are named in Lu Xun's literary works?

Old man: "Don't laugh. My son's name is jujube, which is very nice and smooth. When he was born, a fortune teller passed by the door and made a divination. He hit the wood! Well, you will know that there is "wood" in jujube after reading the book. You see (gesturing "wood" in the air with your hand), it turns out that his name is jujube!

Because the fortune-teller said that the old man's son was knocked out of wood, and the name Jujube contains the father's deep love for his son and hope for his healthy growth, which is the same as the reason why Lu Xun's young boy was born in a leap year, because it also shows that the five elements are short of soil.