Information concerning the Potala Palace: Wikipedia
In recent generations, many have come to regard question and answer dialogues as the style of the Zen school. They do not understand what the ancients were all about; they only pursue trivia, and do not come back to the essentials. How strange!
People in older times asked questions on account of confusion, so they were seeking actual realization through their questioning; when they got a single saying or half a phrase, they would take it seriously and examine it until they penetrated it. They were not like people nowadays who pose questions at random and answer with whatever comes out of their mouths, making laughingstocks of themselves.