Nearly 1.4 hectares in area, with a central courtyard surrounded by five buildings, this residential area will provide housing for people who work in Shalun Green Energy Science City. The latest BIM technology is use to reduce waste resulting from mistakes. The project also incorporates the idea of “material bank”. By modularizing the residential units, materials can be recycled and reused. The units are rent-only and not-for-sale, contributing to reduce waste from maintenance and renovation and ease in management. The courtyard is a social space as well as a small self-sufficient circular ecosystem where rainwater and food waste are recycled to grow vegetables. Residents may also run aquaponics systems or keep bees on their balconies. Electricity is supplemented by solar rooftop panels to maximize use of natural resources.