Columbia subject headings:
Castles--China--History--To 1500.
China--Capital and capitol--History--To 1500.
China--History.
City planning--China--History--To 1500.
Harvard subject headings:
Castles--China--History.
China--Capital and capitol--History.
China--History.
City planning--China--History
Princeton subject headings:
Castles--China--History.
China--Capital and capitol--History.
China--History.
City planning--China--History.