The Raven Door Knocker always treats everyone standing in front of it fairly, no matter what color robe they wear, whether they are professors or students, as long as you can't answer its riddle, you can't open the door of Ravenclaw common room. Even if your shit is about to come out, there is no way. At the moment, there is a person standing in front of it. It opened its eyes and began to tell its riddle: