In the south of China, there is a city called Shenzhen who develop so fast that use more than 40 years from a fish village to a metropolitan. Behind this rapidly growing, there used to be one strict boundary for separating the downtown and the other district in Shenzhen. The barrier line is 84km long consisted with fences and 16 checkpoints. Due to disorder planning and utterly spontaneous development, the boundary line left behind scattered and depleted landscape structures and closed vacant space to the city. Therefore, facing the potential but chaotic environment both brought about by the boundary, the creation of a landscape system that can suture the urban gap until the ‘urban wound’ could be healed. A question has to be answered: How can city and nature be linked in urban landscape gaps in the boundary area using regional and local landscape design? The research has four steps corresponding to three scales. 1 Starting from regional scale to define the most problematic place which enjoys the highest natural potential. 2 Purposing a nature-based framework which explores the potential the best in the gap scale. 3 Connecting with current situation and strategies, to realise the sustainable development in local scale. 4 The last step is to go back to see how research results can be applied to the regional scale.