The waiter at the hotpot restaurant put stools for everyone queueing at the door so they could sit down. Of course, they also put snacks at the door for those waiting in line.
The snacks were delicious and also unique to the hotpot restaurant. Those who came to eat at the restaurant were anxious as they waited.
"Waiter, will it be our turn soon?"
"I wonder how much longer we'll have to wait. I'm so excited to eat here."
"Let's take a number first."
"Waiter, you should expand the shop. It's always so full here."
"That's an excellent suggestion."
…
While waiting, the eager patrons asked how much longer they had to wait before they could eat. Some even suggested expanding the restaurant to accommodate more people.
The waiter thought the restaurant was already big enough. After all, it spanned two shop lots and two floors. Still, too many people visited the restaurant daily, causing a seemingly perpetual queue to form.