I'd crossed the grass and was sitting comfortably under the shade of a tree when a guard (unarmed, but uniformed and cross-armed) came up and pointed to this inscribed rock.
He barked a few words that sounded like, "Hey, dummy whatcha think you're doin'?" That was the tone anyway and now he was jabbing his finger at the words on the rock. Well, I couldn't understand the Chinese characters and I couldn't understand the English ones either. So I shrugged, got up and left.
What's your translation?