摘要
As the capital city of the last dynasties in the history of China,Beijing developed a com- plicated fortification system,consisting of city walls,gates,watchtowers and moats.Although most of the defense architecture has been dismantled to make way for modern infrastructure, some old names still stay with the city.Chaoyang District in the northeasteru part of the city proper earns its name from the east gate of the ancient inner city:Chaoyang Gate.
