Mengji Railway Company generally refers to Mengji Railway Co., Ltd., which is a wholly-owned subsidiary of China Railway Corporation, and undertakes the construction and operation management tasks of Zhang Tang Railway (Zhangjiakou to Tangshan) and Chaowu Railway (Chaoyang to Ulanhot). According to the Implementation Plan for the Reform of the Company System of Central Enterprises, Ji Meng Railway Co., Ltd. managed by the central government was transformed from an enterprise owned by the whole people into a limited liability company, and its name was changed from "Ji Meng Railway Co., Ltd." to "China Railway Co., Ltd. holds 0/00% equity of Ji Meng Railway Co., Ltd.". Division-level units refer to party and government organs and institutions at or below the county (city, district) level. Therefore, Mengji Railway Company is not a department-level unit.