Two characters.老 (old) is a bit too zoomed-in, but we see a bit of a wheelchair wheel here along with some wheelchair frame and that brake-part of the wheelchair that you can block the wheel with. Anyway, wheelchair = old师 (division), and if that that second line from the left is not creating a division across this character, then I don't know what is.Not really sure why old division is teachers, but teachers are typically old and they do enjoy dividing your day into boring sessions of them droning on.