I saw a running crew at Changgyeonggung Palace haha

The weather has been so cool lately at night,
so I was taking a stroll around Changgyeonggung Palace at night.
I heard the sound of running behind me, and when I looked,
there were four men and women in their late 20s running together haha.
Everyone was quietly enjoying the palace grounds,
but when a staff member told them they weren't allowed to run here,
they didn't even say a single word of apology... they just looked around awkwardly and started walking.
Even if you have zero common sense, I can't believe
they actually thought about running in Changgyeonggung Palace.