Mixed, this style of garden has the characteristics of the above two forms. The main feature is the natural planting of plants and the regular shape of planting ponds, which is the most common form in roof gardens. Rule design rule: Because the roof of this style of garden is mostly geometric and the area is relatively small, in order to coordinate the layout of the roof garden and the site, regular layout is usually adopted, especially the planting ponds are mostly geometric, mainly rectangular, square, regular hexagon, round and so on. Sometimes they are properly transformed or combined into several shapes.