TIMELINE

1952: Architectural remains and Jin Dynasty (1115-1234) tombs are discovered near Taoranting Park in Xicheng district, Beijing.

1958: Archaeologists survey the remains of the Zhongdu city wall and conduct a comprehensive survey of the site. They also draw a preliminary sketch of the Zhongdu city restoration.

1990: The Zhongdu water gate is discovered at a community in Fengtai district, Beijing. The remains consist of north-south wooden and stone structures, with the gate built across the city wall. Water flowed north to south through a tunnel, entering the southern moat in Zhongdu.

1990: The Zhongdu palace area ruins are discovered, with specific locations of the main palace and other buildings identified.