The picture gives information about the floorplan of a school. From the picture, we can find that there are two stairs and many labs. We may climb up the stairs from the bottom left corner of the picture, and find a staff office on the left-hand side and an OMVPE lab on the right-hand side. It is also worth noticing that there are two photolithography labs if we move further down the corridor. If we climb up the stairs from the top left corner of the picture, we can find a student office and a water plant. Overall, we can draw a conclusion that the layout of the school is crystal-clear.