《新五代史·附录·四夷附录第一》
唐时设置束狭石、西狭石、渌畴、米砖、长扬、黄花、紫蒙、白狼等戍镇，以此扼制契丹。
唐时置东西狭石、渌畴、米砖、长扬、黄花、紫蒙、白狼等戍，以扼契丹于此。
During the Tang Dynasty, towns like East Straits, West Straits, Lu Chou, Mi Bricks, Changyang had been set up, in order to prevent the Khitans from invading.