1952 12 In February, the organizational system of Chahar Province was abolished, and after the merger of Chanan and Chabei, it was called Zhangjiakou Zone, which was under the jurisdiction of Hebei Province, and Zhangjiakou City was under the jurisdiction of the Zone. 1958 In May, Zhangjiakou City was changed to Zhangjiakou Special Zone. 1959 In May, the Zhangjiakou area was abolished, and the counties under its jurisdiction were transferred to Zhangjiakou City. 196 1 May, the Zhangjiakou area, Zhangjiakou city and its subordinate counties were restored. 1967 65438+February, Zhangjiakou area was renamed Zhangjiakou area, which governs Zhangjiakou city, and the county remains unchanged. In June, 1983, 1 1, Zhangjiakou was changed to a municipality directly under the Central Government of Hebei Province. In July 1993, 1, Zhangjiakou city merged and became Zhangjiakou city. Zhangjiakou used to be the capital of Inner Mongolia Autonomous Region. 1On May 9th, 995, Zhangjiakou was officially opened to the outside world with the approval of the State Council.