Zhenglan (Xulun Hoh) Banner, Inner Mongolia, also known as Plain Blue Banner or Shuluun Huh Banner, (Mongolian: ᠰᠢᠯᠤᠭᠤᠨ ᠬᠥᠬᠡ ᠬᠣᠰᠢᠭᠤ Siluɣun Köke qosiɣu; simplified Chinese: 正蓝旗; traditional Chinese: 正藍旗; pinyin: Zhènglán Qí) is a banner of Inner Mongolia, China. It is under the administration of Xilin Gol League.