Sechen Khan

Sechen Khan, also spelled Setsen Khan (Mongolian: ᠰᠡᠴᠡᠨ ᠬᠠᠨ; Cyrillic: Сэцэн хан; Chinese: 車臣汗), refers to the territory as well as the Chingizid dynastic rulers of the Secen Khanate.

It was one of four Khalka khanates that emerged from remnants of the Mongol Empire after the death of Dayan Khan's son Gersenji Khongtaiji in 1549.

In the early 1630s, the 5th Dalai Lama bestowed on him the title of "Gegeen Setsen Khan" (Гэгээн сэцэн хан).

In the next year, Khalka was divided into three zams (зам), the area of Sechen Khan aimag was named "Khalka Left Zam" (Mongolian: Халхын зүүн зам, Chinese: 喀爾喀東路).

[5] Since 1728, each aimag was governed by aimag congress chigulgan (чуулган) comprising the lords of the khoshuns; the chigulgan daruga (чуулган дарга - official presiding the congress) was appointed from the khoshun lords by the Qing government.