There are many children with marked numbers and dot numbers living in the numbered and dotted buildings. They have to spend the winter and summer vacations just like us human children. The difference is that their winter and summer vacations are all spent in sleep, unless something very important can wake them up.
Just like now——
A "big hand" suddenly fell from the sky and rang the doorbell of the small building, full stop. "I woke up immediately, but the sleepy comma "," still slept soundly...
Concept: Daily life of punctuation marks