Xireg (Chinese: 希里沟镇; pinyin: Xīlǐgōu Zhèn, Mongolian: ᠰᠢᠷᠢᠭᠢ ᠪᠠᠯᠭᠠᠰᠤ, romanized: sirigi balɣasu) is a town in and county seat of Ulan County in Qinghai province, China. The town is located in a fertile valley. Wulan railway station and the G315 highway connects the town to other parts of China.

• Maplandia