Horqin Left Middle Banner (Mongolian: ᠬᠣᠷᠴᠢᠨ ᠵᠡᠭᠦᠨ ᠭᠠᠷᠤᠨ ᠳᠤᠮᠳᠠᠳᠤ ᠬᠣᠰᠢᠭᠤ Qorčin Jegün Ɣarun Dumdadu qosiɣu; simplified Chinese: 科尔沁左翼中旗; traditional Chinese: 科爾沁左翼中旗; pinyin: Kē'ěrqìn Zuǒyì Zhōngqí), formerly known as Darhan hoshuu, is a banner of eastern Inner Mongolia, People's Republic of China, bordering Jilin province to the east. It is under the administration of Tongliao City, 101 kilometres (63 mi) to the southwest.