Under the Silk Road Sea Route framework, Shenzhen New Marine City is a major strategic move to transform the marine industry of the Guangzhou-Hongkong-Macau Great Bay region. Meanwhile, in a time of climate change and sustainable thinking, as a new city it bears the mission of creating a higher level of environmental and living quality. Its unique advantages as a l land-reclamation city, compared to inland cities, should be a starting point in re-envisioning how to address those challenges. Therefore, we partnered up with Deltares and blended expertise in, on one hand, planning and design, on the other, delta water environment engineering. Our collaboration produced a plan to build both a future marine economic center and a sustainable and resilient city of high environmental quality.