Horqin Left Back Banner (Mongolian: ᠬᠣᠷᠴᠢᠨ ᠵᠡᠭᠦᠨ ᠭᠠᠷᠤᠨ ᠬᠣᠶᠢᠲᠤ ᠬᠣᠰᠢᠭᠤ Qorčin Jegün Ɣarun Qoyitu qosiɣu; Mongolian: Qorcin jegün garun qoyidu qosigu 'Northern banner of the Khorchin east wing'; simplified Chinese: 科尔沁左翼后旗; traditional Chinese: 科爾沁左翼後旗; pinyin: Kē'ěrqìn Zuǒyì Hòuqí, original Mongolian name Büve vang qosigu) is a banner of southeastern Inner Mongolia, People's Republic of China, bordering Liaoning province to the south. It is under the administration of Tongliao City, 75 kilometres (47 mi) to the north.