A worker tamps the inkstick mud before shaping at a workshop of Old Hu Kaiwen Inkstick Factory in Shexian county, East China's Anhui province, Sept 4, 2017. The factory is well known for its production of Huizhou inksticks, which are the premiere Chinese ink made of soot. Nowadays, the inksticks produced in Shexian have became a kind of artworks, not only among the painters and calligrapher but also around the collectors. [Photo/Xinhua]