Aerial view of underground courtyards in Henan

Photo shows the aerial view of underground courtyards at Qucun village of Shanxian county in Sanmenxia city, central China's Henan Province. About 100 underground courtyards, primitive-style underground cave dwellings, have been restored and developed into tourist spots in Shanxian county of Sanmenxia city. (Photo/Xinhua)

A papercutting is seen in an underground courtyard at Beiying village of Shanxian county in Sanmenxia city, central China's Henan Province. About 100 underground courtyards, primitive-style underground cave dwellings, have been restored and developed into tourist spots in Shanxian county of Sanmenxia city. (Photo/Xinhua)

A villager walks in an underground courtyard at Qucun village of Shanxian county in Sanmenxia city, central China's Henan Province. About 100 underground courtyards, primitive-style underground cave dwellings, have been restored and developed into tourist spots in Shanxian county of Sanmenxia city. (Photo/Xinhua)