sentences:  This area is the watershed between the arctic (Tuul River) and pacific (Kherlen, Onon) basins and named Three river basins.From there the Kherlen flows in a mostly eastern direction through the Khentii aimag.On its further way it crosses the eastern Mongolian steppe past Ulaan Ereg and Choibalsan, entering China at , emptying into Hulun Nuur after another 164 km.