an impregnable fortress, an unassailable territory
傾国傾城
woman so glamorous as to bring ruin to a country (castle) as its king (lord) is captivated by her beauty, femme fatale
傾城傾国
woman so glamorous as to bring ruin to a country (castle) as its king (lord) is captivated by her beauty, femme fatale
孤城落日
feeling (looking) lone and helpless, helplessness of those in reduced circumstances
一国一城
establishing only one castle in each feudal domain (edict issued by the shogunate in 1615), being independent (acting without compromise or assistance)
弧城落月
feeling apprehensive, feeling (looking) lone and helpless, being down-and-out (ruined), helplessness of those in reduced circumstances
籠城作戦
strategy of holing oneself up in a castle (house, building)