A dance studio

I took the lesson with teacher I today.

I shared my story for today with her.
I went somewhere this morning, my destination was on the 5th floor of the building, but I pressed the wrong number button on the elevator.
And then, the elevator stopped on the 3rd floor and opened the door.
I saw someone dancing.
In addition, they had just finished dancing and posed.
It was very awkward, so I pressed the close button again and again immediately.
I realized it was a dance studio.

Regarding dance, she asked me if we have folk dances.
In our case, we did folk dances on our schooldays, especially on the sports festival day or at the campfire.
I'm not sure why we have to dance on these occasions.
According to her, they do folk dance at the cultural festival with wearing traditional dress.
It was so beautiful.