In a garden, the image of a bridge is more prominent than that of a path. Generally, the functions of a bridge can be divided into three categories: first, for passage, which is its material function; second, for appreciating the shape of the bridge, which is its spiritual function; third, for composing scenery, as people walk on the bridge, and due to the open expanse of water, this place becomes an excellent spot for enjoying the view. However, if a winding bridge is used, such as in the Humble Administrator's Garden and the Master-of-Nets Garden where there are winding bridges, people walking on these bridges can naturally admire the scenery on both sides of the bridge. But the winding bridge should be naturally curved. Some winding bridges are overly exaggerated, not only bent at 90 degrees but also made into "nine bends". People walking on them feel constrained and uncomfortable. The role of the bridge in composing scenery also includes dividing the water space, making the water space have layers. Therefore, when setting up a bridge on the water surface in a garden, it is always done to divide the pond surface into different sizes, making the water surface distinct between main and secondary areas. For example, in the large pool of the Master-of-Nets Garden, a winding bridge is used at the northwest end, and a small arch bridge is used at the southeast corner, forming a large water surface in the middle and two smaller water surfaces on both sides, not only creating layers but also distinguishing between main and secondary areas.