Well, because the bond is once again between carbon number one of one glucose and the fourth carbon of the adjacent glucose. But the arrangement, the orientation of this first carbon, the Animeric carbon, is the beta arrangement. That means this bond points in the same direction up with respect to this bond. And so this is precisely what gives it that long linear structure. Now, as a result of the long linear structure, many of these fibers can basically stack on top of one another, and they can interact via hydrogen bonds. And that will give cellulose a very, very strong nature.