Lantern-decorated underground courtyards in Sanmenxia, C China's Henan

Photo taken on Feb. 3, 2018 shows underground courtyards in Shanzhou District of Sanmenxia, central China's Henan Province. Underground courtyard in Shanzhou, unique residence in mountainous areas of western Henan, is listed as the national intangible cultural heritage in 2011. (Xinhua/Li An)