soft focus,99Art,Isometric perspective,bird's-eye view,design a promotional poster with the background of the sea,sparkling water,boats,straight wooden bridges,green plants,and beautiful buildings. The overall style is 3D cartoon rendering with fresh colors. There is a relatively large island in the middle of the picture,surrounded by three irregular islands,connected by wooden bridges. Each island has an exquisite building,showing various modern buildings,including furniture stores,banks,schools and other different types of buildings. Excellent color matching,exquisite architecture,high quality,rich composition,imaginative picture,bright picture,