2.1July 30, 955, Jehol province was revoked. The jurisdiction is distributed in Inner Mongolia Autonomous Region, Hebei Province and Liaoning Province.
The name of Jehol comes from the hot springs in chengde mountain resort. After the hot spring water flows into Wulie River, the downstream part of Wulie River in Chengde City does not freeze and steam transpiration in the local cold winter climate, so it is called "hot" river.
4. The jurisdiction of the whole province is equivalent to the whole territory of Chifeng City, Inner Mongolia Autonomous Region, most of Tongliao City (west of Horqin District), Yixian County, Liaoning Province, north of Jinzhou City, west of Zhangwu County, and most of Chengde City, Hebei Province. In 17, according to the survey of geographical society, the area of the whole province was about147,500 square kilometers. According to the new map of the 23rd year of the Republic of China, it is 173960 square kilometers. In 36 years, the province's area was 179982.05 square kilometers. It connects Liaoning Province and Northern Liaoning Province to the east, Chahar Province to the west and Hebei Province to the south.