Many large-scale landslides and slide dammed lakes were formed during Haiyuan M8.5 earthquake in 1920 in Lannihe valley of Xiji county, Ningxia province.

• 摘要宁夏西吉县滥泥河流域在1920年海原8.；5级大震时形成大量黄土滑坡及堰塞湖。