The exquisite stool frame on each floor lies in the foot shape on the side, which cannot be moved back, back, left and right after being set up, thus increasing the stability after stacking. Small squares are flexible. Everyone can DIY the arrangement they want. When a single combination is taken out, the bench can be used as a reading bench for adults, while children can use squares as reading benches, which is a good parent-child combination in the study. In general, it can meet personal preferences without losing practicality.