The master's design studio project is a semester-long design course focusing on the methodologies and feasibilities to update the old city gates, walls and moats in Beijing with hybridized infrastructure as catalyst to its surrounding area's urbanrenovation process. With more and more emphasis on the re-construction of the old city-structure in Beijing (city gates, city walls and Moats dated from Ming Dynasty), its future urban design practice has become a critical topic. Study takes Beijing Anding City Gate & Desheng City gate area, together with part of the moat and city walls area linking those two gates as research object. / text