Yancheng Province - Yancheng Province

…On the other hand, the local offices established to govern the territories were also called administrative offices. During the reign of Emperor Taizong (1229-41), the first administrative office was the Yanjing administrative office, which was responsible for governing northern China. During the reign of Emperor Xianzong (1251-59), three administrative offices were established, dividing all the territories into thirds. From the mid-Yuan period onwards, administrative offices inherited the characteristics of both and had broad authority in military and administrative matters. …

*Some of the terminology explanations that refer to "Yenching Province" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…一方これとは別に，属領統治のために設けられた出先機関も行省と称した。太宗時代(1229‐41)，華北統治を担当した燕京行省がその最初で，憲宗時代(1251‐59)には全属領を三分して三つの行省を設置した。元代中期以降の行省は両方の性格を引き継ぎ軍事･行政に幅広い権限を持った。…

※「燕京行省」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