A worker arranges bricks for carving at a brick carving company in Linxia Hui Autonomous Prefecture, northwest China's Gansu Province, May 31, 2019. Linxia brick carving is one of the traditional folk arts in Linxia, which became a mature artistic form and prospered during the Ming (1368-1644) and Qing (1644-1911) dynasties. It was listed in 2006 as one of China's national intangible heritages. (Xinhua/Ma Ning)