Wu Chenglin thumps ink materials in the Huizhou District of Huangshan, east China's Anhui Province, Aug. 29, 2019. Wu Chenglin is an inheritor of Huizhou inksticks making, a provincial intangible cultural heritage in Anhui. He started to learn the craft at the age of 16 and now owns an inkstick factory. Wu has been dedicating to the inheritance and promotion of the traditional techniques by public demonstration of the making process in recent years. (Xinhua/Liu Junxi)