康熙二十九年八月(1690年9月),噶尔丹在乌兰布通被清军击败后率领残部退回科布多地区。当时,策旺阿拉布坦已经叛离噶尔丹,并占据了准噶尔基本领地,使噶尔丹失去了后方的支援。在极其困难的情况下,噶尔丹从其控制下的哈密地区获得粮食,得以度过寒冬。第二年春天,噶尔丹在科布多地区开荒种田,并发展畜牧及渔业。同时搜罗散处各地的喀尔喀蒙古 In August twenty-nine years of Kangxi (September 1690), Galdan led the remnants back to the area of ​​Khobu in the wake of the defeat of Ulan Bopu by the Qing troops. At that time, Zwanerabutan had already betrayed Galdan and occupied the basic territory of Junggar, leaving Galdan lost support for the rear. In extremely difficult circumstances, Galdan obtained food from the Hami area under his control and was able to weather the winter. The following spring, Galdan set up a farmland in the Cobb area and developed livestock husbandry and fisheries. At the same time collecting scattered everywhere Khalkha Mongolia