The staffs were divided into pairs. They were blindfolded with the black cloth, and they walked into the auditorium along the hand rail. Nothing can be seen, and many people could not adapt to it. They walked along as if they were on the space. Some staff said that blindness is an inconvenient condition because they could only feel the darkness in front of them, in fear of the obstacles ahead; the visually impaired students did a good job, because they have to overcome the fear of darkness and face the world bravely.