Construction of a high-tech industrial park began on Sunday. The project above Nanda Road Station of future Metro Line 15 will open to the public in 2022. Nanda in Baoshan District, notorious for soil and air pollution, is to become an environmentally friendly high-tech park and community. Nanda Smart City will have over 5 million square meters of new buildings. Work began on Sunday on the twin towers at the entrance of the proposed home to companies in intelligent manufacturing, 3D printing, smart vehicles and the Internet of Things.