Prohibition on Crossing the Castle - Etsujo no Kin

…At first, the laws were customary and were administered in the interests of the ruling class, so in order to eliminate this problem, written laws were gradually adopted, some of which were inscribed on bronze tripods, others written on bamboo strips. During the city-state period, the concept of territory was weak, and the fortress surrounding the people's residence was the border, and it was strictly forbidden to cross the fortress without using the city gates. This rule remained for a long time and was called the prohibition of crossing the fortress. During the Spring and Autumn period, the city-states were dominated by the law of the jungle, and as a result, large cities annexed smaller cities, and in the Warring States period, territorial states were established under the power of powerful despotic monarchs, and the so-called Seven Great Wars continued. …

*Some of the terminology that refers to the "Prohibition on Crossing Castles" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…最初はその法律が習慣法で，支配層に有利に運営されたため，その弊を去るためしだいに成文法が用いられ，あるものは銅鼎に銘文として彫りこまれ，あるものは竹簡に書かれた。都市国家時代には領土という観念が稀薄で，人民の居住地の周囲の城郭がすなわち国境であり，城門によらずして，城郭を乗り越えることは厳重に禁止されたが，これが長く後世に残って越城の禁と称せられた。　都市国家は春秋時代の攻戦によって，弱肉強食が行われた結果，大都市が小都市を併合し，戦国時代に入ると強大な専制君主権力の下に領土国家が成立し，いわゆる七雄国対立の形勢が続いた。…

※「越城の禁」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報