(Logic Puzzle) Lateral Thinking Method

(Seeing that there used to be reasoning puzzles on the forum, I'll post a few questions too. Hmm, I'm a bit poor, so you'll only get 500,000 membership coins if you guess correctly.)\A family decided to move to the city, so they went looking for a house.\The family had three members: a couple and a five-year-old child. They searched all day, and it wasn't until the evening that they finally saw an apartment rental advertisement.\They hurried over; the apartment was unexpectedly nice. So, they went up to knock on the door and ask.\At that moment, a gentle landlord came out and looked the three visitors up and down. The husband mustered the courage and asked, 'Is this apartment for rent?'\The landlord regretfully said, 'Ah, I'm really sorry, but our apartments do not accept tenants with children.'\The husband and wife didn't know what to do for a moment, so they silently walked away. The five-year-old child saw everything from beginning to end. That adorable little heart thought: Is there really no way?\His little hands, like red leaves, went to knock on the landlord's door again.\At this time, the husband and wife had walked five meters away but kept looking back.\The door opened, and the landlord came out again. The child said spiritedly: '…'\After hearing it, the landlord burst out laughing and decided to rent the apartment to them.\Question: How did the child convince the landlord?\This is a question I heard a long time ago. Does anyone know?